Putting them to bed early-with food?

My new 6 week old chickens are being kept separate from my other chickens for a couple of weeks. Due to this they can't get into the coop from their run I put them to bed every night. I have just realised I am out tomorrow at 5.30, I can't leave them outside until I get home. I don't like to put food and water in the coop but does anyone think I should as they are going in there that early. In a week or two it won't be an issue when they are all mixed together

Thanks for that. Yes there is plenty of room for water, I think I will do that.