How do you store scoby?

Scoby for kombucha usually needs to be fed every 10-14 days. I’m going away for a month and can’t take it with me. I need to devise a super simple way my family can take care of it till I get back. What’s the best way to do this? I would assume that feed it right before I leave and put it in the fridge but it is exposed to air and until the PH goes up (due to it being cold and slowed down) I’m concerned it will go moldy.