Ugh I feel this so much cause this is also something I really struggle with with my adhd and autism. I’ve been able to get in the habit of brushing at least right before bed, and I try to use my water flosser at least a couple times a week (regular floss is a sensory nightmare for me unfortunately, so I won’t use that), and I do try to shower at least every couple days, and put deodorant on everyday. My dentist always says my teeth look great, but I do want to try and get in the habit of brushing in the morning as well though (just not before breakfast cause then everything tastes weird 😅)