Similac sensitive and total comfort help

April

My baby has horrible reflux Similac sensitive and the total comfort both help the reflux and cause no spitting up whatsoever and my baby is super happy and calm but then starts getting hard stools no matter what I don’t know how to combat it I don’t want to take him off this formula please I need ideas every formula has made him throw up the only one I have not tried as gentle ease but I heard it gives a really bad diarrhea???????