"try to see what's really there, and don't stop noting no matter what"

I think you are doing great. I would suggest cutting out the first part of the breath sit and instead also do Noting. I think minimum 45 minutes of noting practice per sit will do good. Ending with Metta is probably ok but add extra time for that. Do not cut your 45 minutes noting time short. 

Instead of the breathing meditation you can just start by calming the body with each in and outbreath for 10-20 seconds. Just this to collect yourself a bit. You can even do 2 counts to 10. That should settle you in nicely and then Noting for 45 minutes (or longer if you so choose). 

Generally speaking if you had a fase in your practice where you just loved sitting and very often and you thought of meditation being the best thing in life, chances are that was the A&P. 

As this stuff is cycling it's a bit like chasing your own tail. Stop chasing tail and instead Accept ALL that restlessness and aversion or misery or disqust, fear or else. Sit with it with utter acceptance even if it feels like Hell. 

Ingram keeps repeating that word Acceptance throughout his book constantly. For a very good reason I'm sure. Also he mentions keep noting without laps in mindfulness. These two things are worth remembering often. 

Also try to up your practice to 2 times a day 45-60 minutes each sit of pure noting 1-2 sensation a second. This is especially good when in the Dukkha Nanas. 

Don't worry about "seeing insight". Insight can be subtle or Wow. Either way good stuff. Also when it happens it's more like a sudden unexpected slap in your face You just laugh or cry or nothing at all , and carry on noting. All experience, including Insight is transient and gets locked into the memory prison. We can talk about it but it's not It anymore it's gone, gone, gone. The only real Treasure is that very momentary act of Satipatthana, that seeing of object arising-passing (hence not-self, unsatisfactory and utterly impermanent). 

I hope my words are not causing more confusion  
Best wishes to you! 

I have some general advice, very general advice, it's also unconventional advice. Not everything I say may apply to your situation but there are lots of readers on this forum, so I hope you don't mind.

Many people will tell you that you have to stick with one pracice to get results. The problem with that advice is there are many different types of practices and many different types of people, and finding the right practice for the right person should not be left to chance. Why invest years in a practice you don't like when there are so many others you may never experience that might work better for you.

Meditation is a life long process, so there is no reason to rush, why not spend time looking around at other forms?

I also believe meditation should make you feel better today, not just at some unspecified date in the future - because for some people, particularly if they are in the wrong practice, that future day will never come.

Meditation can allow unpleasant memories and thoughts and emotions to rise to the surface of consciousness and insights can turn your world view upside down so that is to be expected. But I don't believe long lasting dark nights are inveitable and you have to break through them to find equanimity. If you are in a long funk, I think it's more likely you are doing the wrong type of meditation for you, or you are doing the technique wrong, or you have issues that are unrelated to meditation that need a different type of solution.

So my advice is if you are not feeling good about your practice to try something else. 

Even if you want to stick with what you are doing now, there is no reason  you can't try something different once in a whlie instead or in an extra session.

How will you know what you are missing if you never try?

No one teacher can expose you to every variation and  type of practice. Buddha tried two teachers and then struck out on his own. Shinzen Young teaches five different forms of meditation. So if someone wanted to explore different types of practice looking at his teachings would be a good place to start. His methods can produce a gradual awakening as well as a more conventional cessation/fruition. I prefer the gradual approach because I don't have any faith in mystical involuntary discontinuous events like cessation/fruition or realizations.

From reading this forum I've noticed that different people describe the effects of practice differently, what I think that means is that if you get locked into one practice you may not get the full benefits of what Buddha taught. He taught both samatha and vipassana, and he taught sitting meditaiton and mindfulnes in daily life. I believe having a rich multifold practice will enrich your experience and produce better results over the long term.

I think it is best to always keep looking and trying new things, even after you have settled on a practice. There are differnt techniques that work best for you for sitting, or walking, or relaxing lying down, or for other tasks in daily life. The more techniques you try the more situations you will find ways to practice in. 

And there are subtle variations and nuances in how to understand or practice any type of meditaiton and the more different styles  you are exposed to the better you will be able to get the nuances of your own style right.

I've tried many different practices, I feel I know which ones to use in different life situaitons I find myself in, and I am still always trying new things and integrating them into what I do, or not using them if I find they don't work for me.

Try to notice if something improves your well-being if it does, use it, if it doesn't, if it makes you tense, or you feel suppressed, or uncomfortable try something else.