Back to work

I'm going back in about 10 days after being off since August 1st. Baby was born August 7th, so he's 8 weeks old now. He will be starting daycare with an in-home babysitter who has a couple other kiddos, including my nephew (so baby's cousin). I'm a first time mom and have no idea what to expect. Any advice on how to prepare either myself or baby for this transition??