Bf wants me to work less

I’m 25 weeks pregnant today and work 40+ hrs a week. I work in a local “fast food” restaurant that my mom manages and it is really hard work lately, mostly just running around on my feet all day, carrying boxes to stock stuff, mopping, cleaning, etc. thankfully we don’t have a lot of employees but the ones we do are mainly other women that have had kids and we are all very close so they are willing to help me out when it comes to having to get a ladder or carry some of the big stuff. So I mean I could have it worse. But lately I’ve been so beyond exhausted all I do is sleep once I’m home. It gets to the point I can’t even walk across our apartment anymore because my hips back and legs are just completely shot and send shooting pain down both my legs when I am on my feet. I was telling my bf last night about how much OT I am getting on this new check and he told me he thinks I should work less. He said that I just don’t need to work so much bc he got promoted to manager at his job (works at a different restaurant) and is making a lot more money now plus also getting a ton of OT and he thinks working so much is just too hard on me and we have both been too exhausted to clean anymore outside of our work schedules. He told me he thinks it’d work better for us if I was just home a little more, like only working 30-35 hrs a week. I get where he is coming from and honestly I wish I didn’t work so much with how bad my body has hurt lately and I do like to be the one who cleans as I’m really OCD in the way things get done and if they’re not done right I will redo them even if it’s ok. But at the same time I’m not sure how I feel that he asks that of me. He has never told me that I don’t clean enough or anything like that, he doesn’t care as much about a clean house as I do only unless it becomes such a problem then he’ll just start doing more cleaning on his own and not even say anything to me about it. Idk. I’ve always been a really hard worker, I moved out of my abusive adopted moms home at 16 and into my mom and stepdads house and immediately got a job within that month and have worked ever since. Even in HS I was working 40 hrs a week. I feel like I don’t know what to do with myself if I’m not working. Plus I also just got a raise so we are making such great money right now and I really want to have $1500+ saved up to take my 6 week maternity leave in late February. I told him I will work my OT for the next month, and then talk to my mom about maybe getting less hours. My mom worked 45+ hrs while she was pregnant all the way until she gave birth to my littlest brother who is 6 now so I feel like I should be able to, also and I’m not sure how she’ll take me wanting less hrs considering we are so short staffed rn. When did you guys start working less during pregnancy, if at all? Is it normal to work less hrs when pregnant?