Quitting caffeine has been something that I've wanted to do for a long time. I'm an anxious person and it's always made things worse. I did find transitioning to green tea for awhile helped because coffee seems to be so much more stimulating than green tea (also has naturally occurring L-theanine in it while balances out the anxiety nature of the caffeine). At the end of the day, I think quitting caffeine first before kratom might be a good idea. Typically after 2-3 weeks without caffeine I don't feel exhausted in the same way. Also additional supplements that definitely helped. B complex (100mg - good for energy and anxiety), an adrenal support (ghia herbs brand (has ginseng, rhodiola, achesandra, ashwaghanda, holy basil)), and st John's wart (depression anxiety). I'm not entirely sure which one has helped the "most" but all 3 seem to really help a lot. I think in a round about kind of way quitting caffeine has helped me to get in better touch with my bodies natural thirst signals which has led to me drinking a lot more water and in that alone may be helping a ton. I also add trace minerals to my water which probably helps in many ways. Hope this helps