I found myself, as accurately predicted by MTCB2 and other books, quite a bit lacking in motivation to do longer meditation per day, ever since I hit Eq (but no further)
with last self retreat. Currently I (try to) do roughly 1-2 hr (45 mins each session) everyday, but could no longer get myself to do longer or more sessions (which wasn't hard before).

Any good tips from folks?

Check from Notice How the Mind Works onwards, for Shargrol's inspiring words, thoughful guidelines and tips. Also, I would recommend the general Insight section too. Metta! Pepe