https://youtu.be/Fcn6gVX5y4I
I have the same worry as my boy does not poop regularly, then we found out that he poop every 3-4 days gap. So, we give him this massage after morning shower and before bed. As he grow bigger, we lessen his massage as he is more on breastmilk instead of formula. Do remember to give him some water as formula milk are more heaty