Sensitive formula?

Justyna • Mama to a toddler girl ♥️ and a newborn boy 💙

For moms using sensitive formula, did you switch from a different formula? What signs indicated to you that sensitive was a better choice? Have you noticed a difference.

My 6-week old is currently on Gentle (generic) and he is still very, very gassy and fussy (even during feedings), and strains when he poops (though his poops are not hard). Considering trying sensitive but wanted to get some thoughts, if possible.