Potty Training Week 2

I haven’t kept up with the daily diary of my son’s potty training progress, but I will say he is doing a tiny bit worse this week. Is that normal? I mean, he’s still in underwear all day long and even took a 3 hour nap, in underwear, and woke up dry! It’s just that he’s had a few accidents per day, basically because he doesn’t want to stop what he’s doing. He will sometimes make a teeny drop of urine in his underwear, then tell me, and then he goes the rest on the potty. I think he’s doing great, I just wonder what the regression is from? He also still has not pooped on the potty. He hasn’t gone in 3 days and has the stinkiest gas so I know it’s coming soon. He says he is going to go on the potty, but we’ll see. I hope he is ok at camp next week. It’s only for three hours a day, but I just hope he will comfortable enough to let someone help him on the potty and not have an accident every day and be stuck wearing wet pants because either no one notices or he’s too embarrassed to let someone change him. How should approach that with him? Any words of wisdom from moms who have sent their newly potty trained kids to day care, school, or camp?