I got through a really bad period where I was having severe panic attacks (like "call 911, my vision's going!" type panic attacks). In addition to my usual coping mechanisms I got prescribed a very low dose of Quetiapine to be taken on an as-needed basis. I found just 25mg of the stuff once every 7-10 days basically hard-booted my brain into a calmer state without causing the oversedation and dulled emotions that come with daily medication. It got me through the spring term at any rate so that must count for something.

my personal strategies: finding a cool, dark place; eating something (usually high protein) + drinking something sweet (no caffeine); deep breathing exercises. I also do some Probably Not Advisable stuff (disassociating, processing the feelings), but sometimes avoiding the feelings or letting the feeling overtake me and run it's course are helpful...just not necessarially "healthy", in many situations, I imagine. Wish you well!

also sucks to not have wifi but it's kind of cool that you picked up any signal at all heh.

im really sorry to hear that you're going through this- i found i had phases of these kinds of severe panic attacks (i.e: i live alone and for weeks i kept having panic attacks without realising they were panic attacks and thought i was going to die of a heart attack/etc/etc/..and kept ending up in ER) Constantly reminding myself that i wasn't dying and that what i was going through were panic attacks kind of helped, though it's really fucking tough. hugs
doing all you can to be gentle and comfort yourself and helping yourself feel safe and secure is what helps me most.
take care, you're in our thoughts

Valerian Root pills throughout the day. :)

Make an autobiographical mixtape! By the time you are finished and listen to it, you will feel somewhat better.

Not sure how willing to experiment you are, but when I was having some very severe breakdowns about a year and a half ago I was supposed to start taking psychiatric medication as per my psych doc. However, my bf is quite adamantly against that due to his own really awful experiences with those medications as a child. We came to a compromise after he was witnessing me literally destroy myself and my body over it. We both did some pretty extensive research into both technicalities of brain chemistry as well as others' personal anecdotes and decided to first try nootropic supplements and diet/exercise before heading the "extreme" (psych med) route. Lo and behold, that's actually what's worked best for me in controlling just about any mental issue I'd been having. After a year and a half, I'm probably as mentally healthy as I've ever been in my life. Granted, not every remedy is best for every individual but if you're curious or willing to try out anything nootropic, lemme know and I can recommend a few things to you. Good luck! Hope you guys get some internet soon.