Oh I do know how you feel and I feel your pain
Holly has been on a diet since last year and she has lost around 12 pounds. She is my alarm clock as early as 4.00 am but instead of barking she nicely scratches a chair, making this scratchy noise that at times drives me crazy. I have opted to ignore her as I have to wake up around 5:30 but if is later I just go and feed her. I am trying to feed her a snack before we go to sleep such as carrots or green beans as it makes her full. She also sits behind the sofa in a guard position growling/crying for food even after I have already fed her. Thats what really drives me crazy as I cannot watch TV or read in peace. Good luck.