Excessive Energy - Turning into anxiety?

Don’t know what day I’m on but I think it’s been about a week. Yeah I’m already getting all the “benefits”. This sleep thing is rough though, I’m waking up after like 4 hours of sleep and can’t get back to it even though my body needs it. My brain is so wired though, I’ll only be able to get back to sleep for a little bit but then wake back up because it’s more like lucid REM sleep. I’m also going to the gym so I definitely need more than 4-5 hours of sleep. This morning I had intense anxiety, did some breathing exercises and tried to calm my nerves a bit. I drink coffee and use pre workout which also has caffeine before working out. Should I eliminate coffee? What about nicotine?