Hi Ivana,
I wish you a lot of good luck and practice. My only thought is about how one becomes more of a target of judgement as a teacher. Just having a meditative practice can make one a target: I hid mine for about two years. While the additional (and unsought) scrutiny pulls up more sincerity, more effort, more challenge, it's sometimes a pain in the derriere just like it is for anyone to be judged closely. A teacher is much more of a target... [edit: I don't teach meditation! And I currently don't teach anything else either.]
I do not know another way to earn money.
I would look closely at this rational.
This, I think, becomes a familiar topic for many practitioners. As such it becomes an area which teachers have to contend with in their students. However you resolve this would show up in students. People very often go to their pastors, rabbis, imams, dharma teachers for practical help with work challenges -- to know the practical application of their spiritual/personal practices. So what you do with yourself here would reflect as in/utility with any students.
Also, taking money for dharma is a huge topic. So when we read about various teachers doing very simple income work --- I think it was Suzuki Roshi (Cuke) that ran a laundry mat at the outset --- and how every tradition teaches its aspirants to avoid debt (spinoza ground glass and refused big payments/invitations I think)... well, it relates to that source-o'-money thing.
Best wishes however you proceed.