Hi Doc, and welcome to Freedom!
Disturbed sleep is about normal at this point. See

Since when I was actively using, I had to smoke every 40-50 minutes, what always perplexed me is how the heck I slept through the night?? I mean, without waking every hour to get up and smoke?

This is part of the healing process. It won't last forever. And It Will Get Better.

YQB BillW Six years, eight months, one week, six days. 73422 cigarettes not smoked, saving $14,500.72. Life saved: 36 weeks, 2 days, 22 hours, 30 minutes.