It is important that you follow the instructions given by your veterinarian. You might like to consider taking a photo of your dog at the start of treatment and at regular intervals - improvements such as hair regrowth or the loss of a pot-belly occur gradually so are less noticeable on a daily basis.
The online logbook allows you to track your dog’s improvements and gives you the ability to share this information with your vet. You can even upload pictures to see the changes in your dog as treatment progresses.