the easiest way for me to take care of myself during a horrible depressive period is to stock up on things i absolutely know i will eat. my safe foods are macaroni, ritz crackers and strawberries. i try to stop worrying about what i should be eating and just get something i know my brain will allow me to consume.
i also try to do things slowly in increments to avoid mental bundling. like reminding myself i can go to bathroom without chastising myself for not cleaning the counters and wiping the mirror and taking the trash out, all i need to do is go to the bathroom.
hygiene and physical self care can be really hard during a bad depressive bout so dry shampoo and gel deodorant became my best friend. i also find that listening to a podcast or youtube video makes showering a lot easier because it distracts my brain from the fact that i'm showering - i'm just watching a video in the shower.
i don't know about you but when my mental illness gets real rough my sensory issues become a million times worse, so i find two or three really comfortable outfits and just switch between them.
i really hope you feel better soon. i know how rough it can be, i hope your brain goes easy on you.
<3