I have a five week old baby and want to return to choir practise one evening a week at some point. I had a real job to bring my milk in because DS had a toungue tie. We're finally there and he's gaining weight nicely. The thing is, am I safe to go out for a couple of hours one night a week leaving DH with the boy and a bottle of expressed milk, or will my hard won milk supply be adversely affected if I skip a feed?