I'm disabled, too, so I know what you're saying. Time is different when you don't have to constantly look at the clock and worry about being at work. Since nicotine is a mild stimulant, and new vapers tend to over-vape (I sure did), you're probably a little less likely to feel sleepy. Plus there's so much to learn and do on the forums. Believe me, I'm right there with ya. It actually takes some discipline to make up your mind that oh, it's time I settled down and got to bed. I have found that having a little pre-sleep routine helps calm the mind - brush the teeth, wash the face, whatever. It sends the signal to your brain that it's that time again, and the brain responds accordingly.