Stopping is a very bad idea. It would mean that for the most part everything he has gone through to this point has been a waste. This cancer can be HIGHLY aggressive. Though it has a good response as HPV related SCC, doesn't mean that he is cured. Out of sight doesn't always mean gone. All it takes is one cancer cell to survive for him to face a full blown recurrence - and to be honest even though HPV BOT cancer is said to be more easily treated and cured than non HPV related scc, there are many people here who have had recurrences and many who have died - this is even after a full round of treatment etc... so no - no one that i know of has stopped treatment unless it was with the intent of letting nature take its course - which is a horrible way to go, or they've been told that they are terminal.

its hard... kinda like 5 weeks of continuous labor and then some - but it is doable.

hugs and strength to you.