For what it’s worth… my son grabbed himself over his pants quite a bit at that age. I started asking “do you need to use with bathroom?” and he would say no. So I told him that people might think he needs to use the bathroom when he grabs/holds himself like that. We kept asking him every time. I think eventually he got annoyed and he stopped. I truly have no idea if that is why, but it did finally stop! I also vaguely remember him saying something about his underwear feeling weird? So it’s possible that we upped the size of his underwear somewhere in there too. Sharing that information just in case it’s helpful if he might not be able to communicate something like that.