Venting- lack of sleep

My s/o I been with since 2018, won’t let me sleep. I get like 2 hrs a day. I’m exhausted. I work, from home. I have to be up at 430 and logged in by 530 and I get off at 230ish… he sleeps all day. Then fights with me all night and keeps me up. I feel like I’m bugging running on 1-2 hrs of sleep I feel like I’m dying lol I can hardly communicate with clients and he doesn’t feel like he’s in the wrong. I’m absolutely sick of it but have no where to go. I’m just venting because I’m so stressed… anybody can relate or no?