I've made yogurt twice in my Instant Pot. The first time it came out perfectly. The second time, it was a runny mess, even though I hadn't done anything differently. Here's the recipe/procedure that I used, with skim milk.
https://www.youtube.com/watch?v=KhRc4IgjhnE
Wish somebody made a thermometer that beeps when it cools down to a certain temperature. (Maybe they do make something like that, but I was unable to find anything.) It seemed like too much "babysitting" for me, to have to continually check the temperature. Maybe I'll try again, though. I go through tons and tons of yogurt.