My 5 month old baby is still needing his foreskin pushed down on his circumcision. The Doctor said…

My 5 month old baby is still needing his foreskin pushed down on his circumcision. The Doctor said that when he hits puberty it will work itself out. My question is how long do I have to keep pushing it down? We are supposed to do it every diaper change but I started doing it every other. After 3 months of doing it after every change, it got so tedious.