Hi! So this happens to me too, it’s not quite a panic attack for me but it’s more than just an anxiety attack. Mine happen at night seemingly out of nowhere - I think it’s to do with subconscious thoughts and anxiety that suddenly surface at once resulting in this attack. For me, I find that sitting on a cold floor (think tile or wood) help me calm down. I also recently found that sucking on a slice of lemon or lime can help take away the panicking because of how sour they are. Other than this I use love hemp cbd capsules - I take two 600mg when I feel it coming on and it’s usually calmed down within half an hour. Feel free to message me and chat more about this! It’s reassuring to know I’m not the only one :)

Speaking of cold, I can't remember where I found this suggestion, but to calm my nervous system and activate my vagus nerve, I've been using an ice cube along the sides of my neck and down across my collar bone for about 30s per side and that seems to help me when my weird anxiety has me just pacing around my apartment because I can't sit or relax about anything