If you learn to accept your diabetes and manage it instead of it controlling you this would help no end with the neuropathy.
They say Biotin helps with nerve pain as well.
As to forgetting your injection........ if you remember to eat why do you forget your injections? Solution though is to have a watch with an alarm on it so you do your injections.
I'm assuming you are on multiple injections? If this is the case how about considering having two injections a day of the mixed insulin's? You would have to be very strict with your diet and eat a set amount of carbs at set times each day, but if it gets the insulin into you, does it matter?