Hey Ruth
If its any consolation...were in the exact same position, the whole of last year i was doing my honors research and all i kept thinking about was " the last thing i need right now over and above COVID and academia is a cluster episode". My wish was granted as soon as i finished on the 12th of Jan and got my first episode since 2019. the beast keeps waking me up at 1am everyday and a further surprise as soon as i wake up...and oxygen is now hard to come by here in South Africa since COVID hit us.
Hope WE all get through this. Stay strong!