I drink a full pot of coffee every day and have for many years. I also have trouble sleeping at night have not figured out why.
@MAX That could really have something to do with it. I get so hopped up on the weekends and find myself still up at 2-4 AM still hitting my speed bags, heavy bag or whatever the hell else. There's no way I can drink more than a cup of coffee on a Sunday if I want to sleep well for WORKING WITH SAWS on Monday morning lol

It will likely be really hard but you could try laying off the bean for a week or two and see what happens.. The first three days you'll be draggin' your ass as your adrenal levels get back to breaking even but once you're past that first few days you will start to feel great, naturally. If you try it remember to replenish your electrolytes during those hangover days. Gatorade works with that even though it's pure garbage in the long run.
This is just my experience but it works like a charm. For me.