Infant son and his dad?

ok my sons father has not provided anything for him in his almost 11 months didnt start paying child support until it was court orderd for the first time last month ( i could ask for 20 bucks for diapers and he says i dont have ne money but when i ask how our son is and what he ate for dinner hes remark is ralley's burger and frys i am trying to collect disabity so i have no income) and infact while i was preg. he never bought ne thing he made the remark thats what baby showers r for needless to say i had my son at 28 1/2 weeks and never got to have a baby shower. He expects to pay me child support and have me support our son while he is staying with him. use my carseat my formula wipes clothes diapers bottles drop in for bottles. he uses all these things of mine and then has no toys or bedding for my son not even a high chair and when i informed him our son is no longer eatting jar baby food he eats what i eat he kinda got mad that now he has to provide him food ie he cant afford ne thing supposedly so im at a lost. he has only bought him a blanket when he was in the nic ward and my sons now 11 months he finally bought a carseat which my son will be to big for in .04 oz ( he weights 19.6 lbs car seat holds up to 20 lbs) but the only reason why he bought it is because his girlfriend is preg. so this will be a carseat they can use when she has the baby.what do i do am i wrong for telling him he cant get our son until he can provided his own clothes diapers formula proper carseat and bedding not his bed but a crib. i am at a loss of what to do i really think this is an unstable place for my son. needless to say he lives with his girlfriend her 10 yr old daughter he has visiation with his other 4 yr old son and he has a friend that lives on the couch a grown man 25 yrs old plus my son and the baby thats almost here in a 2 bedroom apt. what would u do if this was your child would u cont. to provide things for his house after all he does pay child support it a fighting battle but he does pay