Signs you should change formulas?

Denise

I am currently feeding my baby similac pro sensitive since birth he drank that kind but in liquid form at the hospital he never had any problems but I am now using powder formula because I was spend 60$ + a week and powder is 60 still but for two weeks I have noticed him a little more fussier so I’m wondering if it could possibly be the new formula I’m giving him ? Or is it a growth spurt bc he’s also sleeping a little more now too