Applesauce for constipation? 🍎

My 1st never had solids until 7 months old for any reason.

My 2nd will be 4 months next week and her poops have became a bit more solid over the last few days..not all the way but semi. She is BF/supplemented with formula and the formula has never bothered her, and I’ve had no change in diet.

I called the nurse line and they called me back and told me to try to give her a 1/2 spoon of apple sauce and if not 1/2 apple juice 1/2 water in an oz. I’ve never heard of this. I trust her pediatrician completely but this makes me a little uncomfortable, she’s not even 4 months?

Has anyone been given this advice or done it? And did it help? Just looking for a bit more insight before I do it, I can’t seem to find much about it from a reputable source on google.