Hi new mom!
I always go on and on about tooth brushing...so here I go.
I would recomend you start brushing your new babies teeth once a day. Even though they don't have their adult teeth yet, it helps improve breath and gets them used to teeth brushing early.
Sydney love it because the toothpaste I buy tastes like caramel. She actually starts begging when she sees the tube of toothpaste.
Anyway...this should improve your baby's breath 100% plus it should save you the trouble and $ of having to have their teeth professionally cleaned at the vet once a year.
Good luck