Sounds like you need to move in with his parents and tell him everyday how much you can't stand his mother. Maybe then he will realize how unhelpful it is to act like this.
Your husband is either very young and immature, or he is very ungrateful, or both. Your parents are allowing you 3 to live with them so that you can save money to live on your own.
Take your husband to a marriage counselor. Do it before you end up living with the baby with your parents WITHOUT him, for several years.
You asked if any of us have lived with our parents or in-laws. Here's my story. I had been married for 10 years when I got pregnant with my first baby, put my house up for sale and signed a contract to build a house, when I was 23 weeks pregnant. A week later, I went into preterm labor. Luckily, the hospital was able to stop it, and they sent me home to go to bed. No more working - strict bedrest. Two weeks later, a family of 5 stuck in a hotel, including a 5 month old baby, signed a contract to buy our house and wanted to close in a WEEK. My family and my husband's family came and packed up all of our stuff and furniture and moved it all into storage. My inlaws invited us to come stay with them so that I would be taken care of. They came home from lunch every day from work and fed me. My baby made it to 37 weeks, and then all 3 of us were with them until my house was finished being built.
We all got along fine. I appreciated what they did for us, more than I can say. I would NEVER have acted like your husband. He should be ashamed of himself.
This is your mother's house. She should not have to walk on eggshells, afraid to speak, because your husband is a jerk. I'm sure his mother would say that she didn't raise him to act like this.
So what if your mom has an opinion about the baby? If you disagree with her, tell her "Mom, that's not the way I want to deal with the baby. Please, Mom. If I have a question, I will ask you. Meanwhile, this is what the doctor says to do and that's what I'm going to do." Unless she is arguing with you both and just being insufferable, then you are wrong. Saying that she should have NO INPUT? None??? The baby lives in her house. You think that it's inappropriate for her to agree with your husband that the baby needs a bottle? She isn't allowed to say anything about that baby?
If you just continue to allow your husband to act like this, you will find that he will start treating YOU like this. He owes your mother more respect than this. He owes YOU more respect than this. Stop biting your tongue and tell your husband that he needs to go get a second job so that he's not around his MIL, or CAN it. Better start standing up to him now before you find out what it's like to live with this attitude in an apartment all by yourself with him, turning his ire to and about YOU.