Need help ASAP baby can’t poop

Mandy • 💏2012 🎀👶🏼1/10/14👼🏻+👼🏻+👼🏻+👼🏻2019👼🏻6/30/19,👼🏻5/31/20

Hey ladies so after loosing my 3rd baby in a row I’ve taken on a baby sitting job with a beautiful 3 month old baby boy named Declan who is absolutely precious but mommy says he hasn’t pooped in days and he seems to be uncomfortable because it looks like he really needs to poop but can’t is there anything I can tell her she can do to help this precious little guy. She called the doctor and they did say it’s normal with breastfed baby’s to be constipated she’s just worried because he seems uncomfortable and she’s a first tie mom who’s husband just deployed so does anyone have any home remedies or tips and tricks that help will help this little guy poop alternative medicine ideas only. I did the little bicycle moves with his legs today and it seemed to get him farting a lot lol so I may continue that tomorrow