Need some advice??

Zayna

So my son is 5 days old and me and my boyfriend have been concerned about his nursing.. The doctor told us that he should eat 20 minutes on each breast every 3 hours.. but my son can only do 15 minutes on one side, sometimes 20. and after every feeding he literally poops right after hes done and his poops are runny and lime green now? My boyfriend thinks its because Im not feeding him his full 20 minutes on each breast?