Im not saying you are not entitled for maintenance, but there are already orders,no maintenance for capable/educated women.
from 1st day you tolerated and you knew, you should not have allowed to come to you and bring innocent child to this world. you should have told him chose her or me on 1st day itself. as you left after child born then anyone can think “teel mai kuch…”
now you have prove he deserted you to get maintenance.
when you are not capable to raise your child, Child father has right to ask for her cusotdy, and if you get her custody he will pay his share of responsibility.