Got my Tmo situation worked out! Thanks to a helpful redditor who works for the AT&T Loyalty Department, I was able to get help from Tmo’s Loyalty Department and get our family plan split into two lines starting on March 17th, when my bill cycle resets after I’ve left. :A: will pay $60/mo for 500 minutes and unlimited web (well, Tmo unlimited, which isn’t really unlimited) and I will pay $10/mo (I think) for my suspended line. When I get back, I will be on the same plan :A: is on, with an extra $10/mo for my unlimited texting. I think they only thing they did for me that was “special” from the Loyalty Department was giving me a Military Suspend. Normally they can’t suspend lines for a super long time, and first-line reps had given me trouble with that. But a Military Suspend goes for up to two years, and I can unsuspend for a week or so if I get to come back while I’m suspended. Perfect!