My boyz are doing the same thing...instead of Riley heading for the kitchen at 10 til 5 he's now starting out at 10 til 4 and you can't convince him it's not time to eat, treats don't hold him over either...he just thinks that's an appetizer! But...my husband is doing the same thing so he hasn't adjusted either! Eventually they'll get used to it and by then it will be time to change again.