I thought a very long fast of 21+ days only needed to be done every several years...but not yearly.
I must say that when I did my 32-day fast, and started to get extreme bitterness, I found out it was actually a sign to quit my fast.
But I cannot speak for others.
You may want to check back on my posts - from about two years ago. I had some severe problems because I fastesd too long. I went to 32 days, but I should have stopped at 28 (when I was hungered).
I want to encourage you to keep g9ing, but only safely...even the experts say very long fasts do NOT need to be done yearly.
14 days is admirable this year after a 28 day one last year.