My lo (4weeks) has trouble pooping he pushes and pushes all day. He turns red from pushing so much and cries if he can’t poop. My mom said I can try giving him a little bit of prune juice in his bottle to help him. Has anyone ever tried it /done it? If so how much should I give him if I try it? Is there a specific prune juice I should use? Lo has a drs appointment on the 7th so I can ask the dr then.