Daughter with ADHD needs OT funds

My daughter has been having difficulty at school in particular with reading and writing showing dexlexia and general disinterest with these subjects. Transferring her to a school with teachers having special education training has helped improve her but still struggles with studies from time to time. In her former school we noticed her steady decline in not just her confidence but also the very poor output of her exams and she would also be left out socially from her classmates. After waiting for months to have our schedule with the Neurodevelopmental Pediatrician, we had our diagnosis, that she has ADHD, our concern with her growth was also raised as she has been always been small for her age even when she was in the womb (her limbs as noted by the doctor are short). She is the smallest in her class but very physically active, we are referred to go to Pediatric Endocrinologist (to consider and hopefully rule out achondroplasia and find out the reason for her slow growth) which is a rare specialty and aside from the distance required to go there it is also very pricey, we estimate $150 just for the tests alone and does not include travel expenses and doctor fees. My wife is a contractual medical secretary and I'm just a musician who barely earns $100 a month, I also wait for my daughter in school so as to save on travel expenses and to make sure I can assist her if something does happen. Our family income barely reaches $350 monthly, and we really saved for months for her consultation with the Neurodevelopmental Pediatrician. Her Occupational Therapy would cost us somewhere like $170 a month and with our current income as is where it's already difficult to make ends meet, I just don't know how we can afford it. The therapy will go on for months until we see the Neuro Pediatrician next year by January. We don't have any idea how much it will cost for her special class sessions we are hoping we can get it for free or very affordable for our budget. ♥I also have a heart condition and physically hindered because of this, wherein I have stopped my full medication because of how weak our currencys purchasing power is and the effect of inflation and the fact I really prioritize my daughter now. Just a desperate dad here wanting to give my daughter a better future who as of now really just feeling overwhelmed. Thank you.