low C can be a tough one…
air has to be there before the tongue releases the reed!
I sometime s cheat by starting on a higher note and glissing down to the low one.
Today I switch my Onyx medium soft reed to a medium Onyx reed and the low C was a easier to blow. Why was a stiffer reed more easy to blow. Mouthpiece was my 7* Fibercarbon Guardala MBII FatBoy
ya makes sense, altho it might seem the opposite. The weaker reed just isn’t giving you enough support down there.
William, you may be better off with the medium full time now. Try playing only the medium for a while…like 1-2 weeks. I think when you go back to the medium soft it might not feel as good.