Constipated baby

Al

Please please help me help my baby.

He’s 7. Weeks old and normally poops 6+ times a day. I talked to his pediatrician and have been giving him the baby bliss probiotic’s, and I started some too but nothing is helping. He’s been going once a day for 3 days but hasn’t gone now in 24hours I’m about to call the nurse line again but I’m just so worried. Poor guy is exhausted from pushing