For just 2 months, yeah, I would leave it filled, set the temp down and/or vacation mode, boost the FC up to shock level. Then figure out (use the pool math app) how much it would be to dose it to shock level once a week or so. You could even pre-portion the doses for whomever is doing it. If you have an ozonator, you might consider disconnecting it since ozone, with nothing else to do, will consume chlorine. With the lower temperature, you chlorine will last longer as well.
I leave my tub for 5-6 months at a time during the winter. On my first (used) tub, I installed an inline SWCG cell (salt water chlorine generator) from Control-o-matic. The duty cycle was set manually using a simple knob, but once you had it dialed in, it would maintain the chlorine level to whatever you wanted. For two winters I left the tub filled, and when I came back, was amazed to find the water perfectly clear and the FC level exactly where I had left it, well at least for the first winter. The second winter I did that, I came back to find the FC had crashed to 0. Turns out a slug had slimed its way into the tub at some point and used up all the chlorine. The system didn't have a sensor like some of the new ones do, so it just carried on with its maintenance setting and never was able to recover the FC on its own. After that I started just draining and winterizing the tub when leaving it that long.
The first time I winterized the tub by draining it and vacuuming all the plumbing out the best I could, my 24/7 circ pump died. It had a magnetic suspension steel impeller which then sat in a little pool of leftover water all winter. It rusted on one side and thus became off-balance, so I had to replace that pump. The new one was more efficient with higher flow, and a plastic impeller.
