my son is 6 weeks old and yesterday he pooped once all day just becaouse i was told to give him water in a bottle amd since then he hasnt pooped he does pee and drink his formula tho and ive noticed today he forces and seems like hes tryingto poop but cant my poor baby i called his doctor today and he told me to give him 1 ounce prune juice mixed with 1 ounce water that was 2 hours ago and he hasnt pooped he passes gas but no poop yet does it take that long to work or what? 😢