Internal vibrations still affecting anyone?

It’s 5:17 a.m. and I’ve been awake for some time because of the crazy internal vibrations still affecting me over two years after my first and worst Covid case. They absolutely terrify me when they start in the middle of the night when I’m asleep. I can never go back to sleep because I always fear they could be “something else.” They’re in my abdomen, chest, legs, etc., and I always think my heart must be racing, but when I take my pulse it’s not. Please, if you have any recommendations, share them. I am still having severe shortness of breath, but only when standing! My vision is blurred but the ophthalmologist can’t find anything wrong. I’ve been tested and tested by the pulmonologist and have even been to UNC’s long covid clinic for testing. They believe my issues, like for other patients, is a neurological problem caused by COVID. Are the vibrations just more of the same? I feel like I have a buzzer going off in my body right now and it’s nights like tonight that I think I’m going crazy. I’m so sick of this! I know that others have more serious problems than mine but this is really affecting my mental health and I’m hoping someone has had success in stopping their own vibrations and can offer suggestions.