I just can't stand how cute he is.
. That's one of the cutest faces I've seen. I don't have any great advice for you as you are doing what most suggested. My kids are all grown up, however we did have kids around when Dex was that age and a biting terror, what helped was really wearing him out with walks , leash training and working on sit and come commands with treats. Lots of "ah ah" when he went for kids hands and immediate treats when he listened. The best was to get him very sleepy before kids would come over to play. Of course at this age these dogs are biting machines, but just know it does get easier. It will be a few more months so hang in there