I can relate to that feeling! I know how I felt anyway. Maybe my experience can help you. First I had to accept that Exhaustion is a symptom of depression, right? Depression is physical as well as mental.
I try to get outdoors as soon as I get up in the morning, even just for a few minutes. And other times, I’ve found it just helps to sleep! I tell myself that I’ll feel better when I wake up and more often than not, I do.
I also have a dog and a cat…they depend on me for food, water and attention. I talk to them. Sometimes after I feed them and Daisy the dog gets her outside time, we “take a vote” to see if we need a morning nap!
You need a reason to keep going but you also need to be kind to yourself.
It’s taken me a long time, it seems, to realize this. I’m 72.
So, get your rest, maybe get a check-up to see if there’s another reason for exhaustion (low iron, vitamin D deficiency, chronic fatigue syndrome…?) and be kind to yourself.