The pandemic situation made me like this. Here's my tips.
First of all set an alarm away from bed so you need to get up to switch it off. Now you're up open the window and take a few deep breaths of fresh air. Fold your covers back to the bottom half of the bed. This gets the stale air out of the room which makes it smell better, it airs your bed which is hygienic and now your bed and bedroom is bloody freezing so you've got no desire to get back into it!
Go put the kettle on and get into the shower. Make the effort to clean at least part of you. You'll probably feel better for being clean. Find proper clothes and put them on. Make a cuppa and put the heating on if you're cold.
You need a workspace so find some kind of table/surface in your home and clear everything off it. Get a wet cloth with a bit of washing up liquid and clean it. Add the things you need, so laptop, pen and paper, phone. Plus some nice things like a plant and favourite photo. Go to work.
Set an alarm for a dinner break. Make a cuppa and a sandwich or whatever you've got, but try to make it proper food, not junk. Get a black sack and collect up all the rubbish in your living room from the floor, surfaces etc, take it out to the bin. Get back to work.
Take an after tea break and rest your mind for 10min, go walk round the garden or stare out the window people watching as they go past on the street, read a magazine.
Wneh you've finished for the day, mark it by putting some music on or watching a TV show, to change the vibe of the day. And open the window in your workspace even just for 20min to change the air. Go for a walk even though it's dark, 10min will do to start with, it doesn't matter where you go but step outside and get walking.
Come back and eat a proper meal including vegetables. Drink water, no caffeine or alcohol. Choose your clothes for tomorrow and put them in the bathroom. Clean up your kitchen: empty bins, wipe counter tops, sweep floor. Do the washing up.
Switch your phone off at 8pm. Whatever anyone wants, it can wait until tomorrow. Staring at a screen does something bad to your mind. I don't understand it but I can feel it. Get away from the screens. Read, exercise, get washed, start one of those adults colouring books, paint your nails, whatever, just get away from the screens. Drink more water.
Ensure your bedroom is warm enough but not too hot, have fresh pyjamas if needed, get an over-the-counter sleeping pill to reset your sleep pattern for a week. Read (not a screen!) under dim light or meditate for half hour to help your mind switch off before sleeping.