stressed out

Our baby is 3 weeks and my SO is on paternity leave.. it's his 1st child, my 2nd... he's been acting crazy and assuming she has something for everything.. all he does is look stuff up like a hypochondriac all day and it's driving me insane.. I'm supposed to be enjoying my newborn not worried to death about everything. "Is she breathing right?" "Why does she sound like that?" "She has a cold.. is her breathing normal? Why hasn't she pooped today? "Why is she hiccuping? I think something is wrong with her" Y'all may think awe how cute but this is all day everyday :( I am so laid back and lately i myself get worried about dumb things too, like about hiccups which our pediatrician has told him like 2495 times that it's normal (we've been there a lot cause she had jaundice her first week) idk what to do..