I have had little interest in playing WoW for about a week.
The first time this happened after about a month I decided I was done. I cancelled my subscription and eventually deleted the very large game from my computer. I even gave away all of my books. Six months later I was ready to play again. Fortunately, the games are cheap to buy (except for the most current).
A couple of years later I did the same thing, waiting more than two months before canceling my subscription.
This time I am keeping my subscription active.