Super charged backlash

I'm caring for my DH at home. He is mobile but I don't trust him to walk without losing his balance so I do assist him. For the most part, I move him out of his chair for meals and bedtime. I can get him to the car so I am able to attend to chores while he stays in the car. All of that is fine on most days. However, at times, he has super-charged days. It might be once a week or once a month. On normal days, he sleeps part of the day. During a super-charged day, he is awake and jabbering(he lost his ability to speak clearly years ago) and wanting to move around constantly. This state lasts about 24 hours which included motion and jabbering through the night. I can deal with all of that. The day or two after this, he is totally out of it. I can barely get him out of bed. At times, he will not open his eyes and he will not move. When I finally get him up, he can barely walk. Once he is in his chair, he sleeps non-stop. I need to work at getting him awake to move to table for meals. He has on occasion just sat down on the floor when moving from his chair. His legs just won't go any further. Does anyone have suggestions on how to reduce the super-charging? It takes so much out of him.