>>2663083
It should be automatic if you don't cum but long term some ups and downs are normal. What personally helped me while self-locked was making it a habit to fantasize and self-insert with porn. Instead of just watching passively, try imagine in as much detail as you can how it would feel: Your hole stretching and relaxing around his dick, the feeling of fullness, your prostate gradually becoming more sensitive while he pounds his cockhead against it in a steady rhythm. Some of my best anal sessions have been kinda spontaneous after doing this, getting so horny that I just needed something in my hole and ended up cumming buckets effortlessly. But for your question, doing it every day or so keeps me in that mildly euphoric state of desperate hornyness even on days I wouldn't feel it otherwise.

It also helps to do anything sexually stimulating other than touching my dick. Everyone would love to have a fuckable hole every day without needing to shit ever but since that's impossible you need something to keep going on the off days. For me that's mostly rubbing my hole from the outside, massaging my taint and playing with my nipples. It won't make you goon or anything but it's low effort without preparation so I do it whenever I can, to keep my body sexually "alert" in between sessions and direct the attention where I want it.