as above, leave it alone, it wont be ready to be pulled back for a while yet. My son was about 8-10 before he could pull it back.

Our nephew had problems at age 4 with infection that would not clear up and he had to have it circumsized to fix the problem. I dont know how they become infected though, but you'll know it if it does get infected becasue it goes very red and is very sore.