Is it normal to feel overly enegetic/restless after going cold turkey from games?

Gaming had been part of my daily routine since as long as I can remember, but I realised at 6-12 hours a day (as much as my schedule allowed) it was a serious problem.

So 48 hours ago I quit totally, trying a couple of new hobbies and I hope to remain this way. At least for until I have more discipline and self control.

However I feel very odd, pacing about almost constantly, a lot more restless and more enegetic... but not exactly a good energetic, if that makes sense. Like I feel uncomfortable.

And I've been having very poor sleep recently too, staring at the ceiling for hours before I nod off. (However this might just be a sudden change in sleep because I've been up gaming till 3am and now I'm trying to get to sleep at midnight)

Sorry for dragging on, but is this a normal response to stopping cold turkey?