I was just diagnosed with ET in January. I was having the same issue. Wasn’t feeling dizzy just off, or lightheaded. Would come and go.
Haven’t had it in awhile. I’m having my blood tested at the end of April…hoping platelets are staying in the 500’s. So far only taking a low dose aspirin. Have found some info on low vitamin d and high platelets. Am going to talk to the dr. about it at my next appointment.