Hello @alphabeta - I can certainly put your account into a state that would require action to reactivate it, if that is what you want, but were you just to take a break from the forum, then come back in a month or two, or however long, your account would be just as you left it.
That may be the simplest way to achieve what you want, but if you have other concerns, or would like to discuss it further, please feel free to send me a PM and we can discuss what you want or need.