when you smoked, what strength did you smoke? I smoked Ultra light 100's and now vape 11-12mg. Higher than that is WAYYY too strong!
That sounds perfectly right.
A question many do not ask newbies, what do you smoke, and then assuming "to get off cigs" everyone needs high nic is a big mistake.
Thankfully, when I started, I was vaping 18-24 and feeling restless and THOUGHT it was because I was quitting smoking, but somebody helped me and when they found out I was vaping such hiigh nic (when I only smoked 1/2 a pack a day) they got me down to 11-12 mg and VOILA! The restlessness went away. I'm mellow and relaxed now.
Best to start out less and work up if it doesn't do the trick rather than the opposite, IMHO. Why even accustom yourself to higher nic than your body even needs?