I get sick too from to much anaesthesia.
I ask them to cut it back or at least get the same mixture from my past few operation's.
They didn't brother me at all.
My last double revision I was ready to go home after 1 hour.
I stayed 3.
Then left.
See if they'll adjust the mixture for you.
I asked and they did and wow what a difference it made for me.
To much of that stuff gives me the dry heaves.
Plus I have an aftertaste of that stuff for DAYS.
But not when it's done right.