Your opponent is likely on vacation, as is their right.
If you have a forced win, you can set up conditional moves so that your moves are at least performed automatically and you can put the game out of mind. If you do not, you'll just have to be patient and play it out once your opponent returns.
How do I claim a victory against someone who is playing a 3-day-move game but hasn't moved in 3 weeks? All this time my Online Chess page has said my opponent has a few minutes remaining.