road trip with 2month old

Taking a 16 hour drive next week ! Husband is army, he's getting leave for a week for a mandatory police academy test he has to do back home so it'll be me, him, baby & our dog! Any advice for the trip y'all could give us is awesome ! How did y'all handle feedings and what should I take that y'all recommend ?  My baby girl loves car rides, but once it's dark she gets a little fussy. We're hoping to leave around midnight so she'll sleep so wish us luck !