Oh really! He is 6 weeks however he was pooing every time I changed his nappy prior to introducing 2 bottles of formula a day was this the same for you before you introduced formula?
Formula is harder to digest than breast milk. She may be struggling with the transition. It will likely pass but you could try: tummy massage for wind; probiotics; changing formula.
And gripe water, who has well as helping wind is a very mild laxative.
(We had this - was tough, but these things helped).
They digest formula differently. I think it takes longer than breast milk, which may be a reason for less frequent poos. Does he seem uncomfortable ? X
How old is your baby? I breastfeed my little girl who’s 9 weeks she has a formula bottle before bed. She poops once every 3 days or so. Odd occasion she will be more frequent. My health visitor said as longs they poo 5/7 days ok.. anything longer get checked. If not sure, contact your health visitor as it may depend on individual factors too xx