Sorry kinda long... Just had to vent

So we tried for a house and our credit wasn't good enough and even with my parents co signing they told them they'd have to sell their house to get our house. So we aren't getting a house, we currently live with my husbands mom but i feel it's very toxic here, I have a 4 year old and we are expecting our 1st kid together in January, my parents told us we can move in with them to save money and there me and my husband would have my old room and my son and our new baby would have my sons old room while we lived there before I got married. Well my husband seems to be hesitant about it even though it would be so much better. He wants to go back to college full time and get a part time job cause he realized that he needs a degree an order to make more money, well my parents already said they are fine with that plan, but he wants to ask his mom to see if she is and if she is he wants to stay here.... His moms house is literally half the size of my parents house, plus she is the type of grandparent that thinks she is ruler of all and she had final say with our kids more than we do, I'm 7 months pregnant and my stomach gets in knots from dealing with all the stress living here. I just don't see why he's so hesitant about moving to my parents....