Do you and your partner rotate night duties

I'm a sahm aways have been of three kids. I have always done the night shift as I call it. For our first I had surgery and couldn't lift the baby for a few months I still got up woke up my husband and made bottles. He's a hard sleeper I couldn't stand the baby crying. By our third we have a pretty good balance this time of he's trying to let me get some sleep at least once in the weekends. Unfortunately the kids in our small home on weekends are too loud. We also have been extremely busy with weekends so I don't get a nap or get to sleep in. Our kids all got hit with RSV currently. And I am around the clock bouncing between the kids rooms. I'm holding baby all night and day long.

Because I am disabled I have a lot of depression with my body pain. Doctors are strongly monitoring me to make sure I'm not having post partum depression because I'm such a high risk. Sleep deprived me isn't healthy physically or mentally. I'm getting concerned. I don't have family that can help me. Is it wrong to ask my husband who works 12 hours days to help me at night or to switch on and off nights? I also breastfeed and pump at night so that is an added thing on my shoulders that he doesn't do obviously.

He is exhausted too and he isn't looking well from how much I'm needing more help with everything being so sleep deprived.