Bf helping financially

So my bf and I are having a baby any day now. I have a 5 year old from a previous relationship. I own a home, have a car that I just paid off but pay every other bill on my own, electric, groceries, garbage, water, tv.... etc. I do make a little more money a month than him. He has a truck payment, boat payment and school loan payment to pay every month and he pays me $300 month for rent. My house payment is $1000. Now is it asking too much for him to put our new baby on his insurance and pay half of daycare? He says he can’t afford it but honestly I cannot since I have so many bills and have. Itching I can really give up as everything I have and pay for is necessary.