I've quit caffeine on a few occasions for long stretches. Most recently I just reduced consumption to a couple of cups of coffee in the mornings and that was it

I've quit caffeine on a few occasions for long stretches. Most recently I just reduced consumption to a couple of cups of coffee in the mornings and that was it (a little creamer, no sugar/honey). That worked really well for 2 years. Then we got a puppy and I haven't slept well in 4 weeks. Typing this as I consume a Diet Dr. Pepper.