I’m not sure

Chy ✨

My baby is 3 months and she was constipated her first month.. I switched her milk & the hard stool turned soft but it’s still not frequent. I give her enfamil prosobee the soy based one & she’ll poop once a week on her on.. if I give her the constipation ease it makes her go. Her last poop was Monday & it was a lot. What should I do?