Set your alarm to check on him in an hour... You will know if the bleeding has subsided enough to be able to sleep well... Is it possible for someone else to check him an hour after that? All for peace of mind.
LOAD quickstop in the bandage. Make a pool (pile) of it, place the toe straight in...
Pressure Pressure Pressure... then quickstop... It will slow. Hold the foot higher than his heart (careful he can still breathe )
When you cauterize it, are you able to bring the pieces of skin together? Here's something to try.. If it slows, and you can draw the pieces together, hold them...
Oh my goodness, what a week you are having. I hope your Mother is okay - that's scary business!
Good Luck with this Redhen... if you're worried about cauterizing, tie a 'tourniquet' above where you are going to amputate... let it bleed just a little bit (will help flush out) then try any...