I am so grumpy I can't believe myself. And I'm not my alter ego stoned at Disneyland Grumpy either.
Sorry, but "grumpiness" is a side effect of low sugar, and for keto to work, your sugar levels have to be dangerously low. You are going to have to get used to it as the new norm. You may also experience some depression. Just keep thinking of the good it is doing you and "grin and bear it".