Some will say to take up the water around 7:00 or 8:00 to minimize the need to potty through out the night. But we never had a problem. I was prepared to spend a month in the guest room with Bailey after we brought her home (so as not to disturb the hubby) for fear of constant whining and pottying. However, after the first two nights - Bailey started holding it while in the crate and the crying was minimal. I was allowed back in the master bedroom in less than a week! LOL
I guess what I'm trying to say - I would leave the water down at all times unless you have potty issues through the night....
Good luck, welcome to YT and CONGRATULATIONS ON YOUR NEW BABY!!