Sometimes I like to be a little dramatic about it, not in a way that expresses chastisement but rather with a little gasp that says, “isn’t this amazing??” Maybe channel some exaggerated fairy tale princess a la Amy Adams in Enchanted.
I also find “catch phrases” to be parenting gold in general. It keeps things simple and prevents me from turning into an adult from Charlie Brown. This is one you will be able to use for years to come.
And truly, for the first year and a half, nursing is probably the easiest way to quiet a fussy baby. I was always able to find a way to discreetly nurse in the pew, but sometimes I had persnickety babies that fared better nursing away from the action. It can take some trial and error to find a system that works for you and your infant. Babies are born whole people, and they can take some time to figure out.