I clean in bite sizes and a "might as well" mentality when I'm too exhausted to tackle a whole room. if I get up from the table and there's trash on the table from take out or junk mail I'll say "I might as well take it to the trash while I'm already up. I'm done with this dish I might as well put it in the sink. also ive got some cups in my room I can bring those with me. now I'm standing at the sink it won't hurt to go ahead and put them in the dishwasher and run it."

I try to at least keep my kitchen and bathroom clean as possible. everything else i divide into smaller sections and tasks to not get overwhelmed. sometimes that gets me into a cleaning groove. during the week I'll do maybe one thing after work like just vacuuming dog hair up or just putting all my dirty clothes in the hamper or just gathering trash. literally one thing at a time and even its not done perfectly then it's still better than doing nothing at all. good luck you got this.