Formula fed x
Orange did the trick for us.
Prune puree x
My little boy was the same and they say when you start solids your meant to do a little bit of a water to help the digestion process
Prune juice ( most babies hate ) Pear juice Apple juice Warm water with a pinch of sugar ( the sugar will draw water to the small intestine making stool softer and easy to pass) If all of this fails and they need immediate relief there is a liquid laxative called pedilax but check with your doctor first there are age restrictions
Lactulose from the GP x
Are you breastfeeding or formula feeding? You can do baby massage for their digestive system, I used to do it at every nappy change when my baby wouldn’t go https://m.youtube.com/watch?si=3MEGAusvL7SPrMV2&v=9PhWkpEp8cY&feature=youtu.be