Mt! On the new baby. Hang in there as @exgingi said this should be the worst of your worries.
Thread reminds me of when my brother in law and sister in law stayed in my house after having thier first baby. My brother in law, all nervous, called me over to help him change the diaper and he starts giving me instructions on what to do andn how to hold the baby's legs while he changes the diaper-like it was a complex surgery. Couldn't hold back my laughter. He called me 2 weeks later (in the midst of changing a diaper) when he got why I was laughing.