Almost 3 year old- sleep regression

Veronica

Our almost 3 year old has suddenly begun waking at night. He about 1 month ago moved into a toddler bed and was doing an amazing job. After the holiday's he now wants his bum patted to sleep and wakes up from 12am onwards wanting me to pat him back to sleep and i have to be there when he wakes or he comes to the roon crying. Anyone else going.through this? How do you deal? Need any helpful suggestions please UPDATE: we.have stoppes.bum patting but i have to stay ib the room tried.the walk back to his bed and that went on for 2 hours every 10 minutes. Im so exhaustedill do anything for some sleep at this point.