He has gone to bed in a pair of pants and his pyjamas.
I did put a water-proof bed sheet on (just incase) and spoke very calmly to Jack before he went to sleep. I encouraged Jack to go for a wee before he went to bed. I then explained if he needed a wee in the night to get up and go to the toilet and if he was to have an accident then to come in and wake me up. *Fingers crossed* it's as easy as the daytime training was.
I'll keep you updated!
If you have any tips or advice I would love to hear them. Please post them in a comment below!