I would agree with some of the previous posters. Remove all batteries, clean up your gear and lock it away. I understand health issues can be a downer and take time away from things you enjoy, but you have to look forward to the good days when you can get out, even if it's just once a month or so. And as far as grad school, it wont last forever. I know it seems like it will, but I promise it wont. Ultimately the decision is yours to make. I hate to see people give up on something they enjoy because life stuff happens. Take a pause, step back, regroup and maybe you'll find new life for the hobby. First and foremost you need to what's right for you and nobody else. Only you know what is the right thing to do. GOOD LUCK. Hope all goes well.