Re getting ready, is there anything you could have duplicates of (some your own, some might be a reasonable adjustment) so you can keep a work bag packed and ready to go.
I find getting ready for work waaay harder now I work from home but also particularly difficult if it's not every day.
So e.g. depending on your office:
Go and buy a travel mug, an entire spare box of teabags/tin of coffee, biscuits whatever you need for drinks to be sorted at the office.
A second charger and mouse and any adapters you need for your laptop so that the only thing that needs to go in the bag is your laptop. A charger for your phone if it will struggle with charge during the day.
A stash of tins of soup/pot noodles/oatcakes so you have something to take for lunch if that's something that you struggle with. I.e. ohhhh I haven't got anything suitable for lunch in the office...meh I'll just stay at home.
Find a pair of office suitable shoes that go with every outfit and keep in bag/at the office.
Then the final hurdle is presumably outfits: I wear dresses every day when I am out so then I don't have to match anything. I have a rainbow of jumpers and just pick one that goes rather than a full outfit coordination.
Obviously actually doing all of the stuff above is also very difficult but if I had a friend ask me to come and spend an afternoon helping them sort that out/basically just coming over and making sure it gets done, I would be happy to.
Then in the morning you literally get dressed (which you do anyway), grab a tin from the cupboard/accept buying lunch as a cost of doing business, shove your laptop in the bag and walk out the door.
Instead of going omg where's my charger/mouse/adaptor and I need a mug and teabags and what am I doing for lunch and omg where are my office shoes at which point the whole thing becomes overwhelming. (Which is what I do!)