my son is 3 weeks and 1 day old he is formula fed, how do i know if enfamil is making him constipated?

Bout 1 to 2 a day, hes okay he dont seem fussy, hes a really quiet baby. I'm unsure on what i should do. What do i do to make him poop normal again pr is this even normal? Any suggestions

Formula is considered to be "heaty" by many. So you may want to give your son some water after each feed. If problem persists please do consult a pd.

How many time he poo a day? Look abit hard to me, baby ok? Fussy?