cant you just put him in your bedroom and shut the door? if your doing the crate method of training him then you can keep him in the crate at night but take him outside in the night for a wee if he needs to. I havent used a crate with Buddy but i know loads of people on here do, so if you search crate training you'l get some great advise.
btw.. welcome and post some pics if you can
