Many guys stay on year round. But your body will crash much harder and it will take a lot longer to fully recover. What week are you in? Maybe take a few weeks off, do a pct, then hop back on.
you can but your gains are not going to be as they were in the begining; so you'll have to up the dosage - which i don't recommend since it will be harsher on your system and without an apropriate PCT regiment your going to crash hard