Switched to soy -questions

Taylor

We recently switched from regular formula to soy at the recommendation of our doctor. My 11week old daughter was on Zantac for one month and is now off of it but was no longer eating after stopping it even though her reflux went away and she was eating fine with the reflux.

I’m not loving the effects the soy has (constipation, smell, etc) but she is doing better with it. My question is, what can I do for the constipation? Will she have to stay on this until she’s one or can I likely switch her back? My first daughter is two now and she’s never had any problems with lactose so I’m new to this.