Moving back to in laws with a baby troubles?!

So our lease is up in may I had my baby in March of this year so she’s 7 months now. I have had such an amazing opportunity to stay at home and nanny a couple other kids and will until next may in a house we rent. However, it is way too expensive to afford and next summer I’ll have off again so it will leave me jobless and I don’t have enough money to afford it we also have two car payments so we pay over 600$ a month on our cars alone and I. Am. So. Disappointed. I want to give my babygirl the life she deserves but I know the only way to do it is to move back in and get our cars paid off and then try again. (We have 4 more years to pay on each) so I know it’ll take ATLEAST a year living with them to pay off both but my mother in law is just something else. I know she will try and take over to be her “ mom” she does at every family event and even when she comes over or isn’t even with us she calls us all the time to make sure we’re doing and not doing things with her and she complains low key at how I do things with like feeding her, her room would end up being right next to hers and we’d be in the basement and I just don’t want to hear my babygirl yelling “grandma” in the middle of the night when she wakes rather than “mommy” I just am so worried about my daughter loving her grandma more than me and I don’t. Know. Why. I’m so disappointed in myself that it’s not working out with us living alone. And I know I’m being crazy but I just am so down about it right now. And I need some advice. Are any of you going through the same thing? I know if I suck it up for a year it could be an amazing thing for us but I’m just not sure if I can. How do you all get through it dealing with the crazy in law? I’m not going to sit here and write a list of everything she does because there’s so many so if you have a crazy in law I think you’ll understand. Please teach me how to get through it.