You are suffering exhaustion as a symptom of your depression? That is what this post sounds like.
Not sure we can help with that.
When I have exhaustion from overwork and cannot immediately adjust my circumstances, giving up (acceptance of what is going on) and more exercise, even if it means less sleep time available, has been the most helpful but it’s a short term strategy. The exercise improves my sleep and raises my spirits.
Then eventually the stress ends and I get a migraine :( and then back to my normal.