J.F.
I'd try no liquids after 6pm...except maybe a quick last drink of water after brushing teeth. I also would not wake her up in the middle of the night at 4.5years old. I would be prepared to buy more pull up's and use them until she is waking up @ 4 mornings per week dry for a couple of months in a row THEN try to get those remaining days dry while making the transition to underwear at night. I was probably 7-8 years old before I completely stopped wetting the bed...deep sleep was a huge issue but disrupting a child's sleep EVERY night is not the way to go. Bed wetting is very common and needs to be handled delicately. At 4.5years old it sounds like her body just needs more time...good luck!