Do you skip days, or how do you know you aren't addicted? 20gpd over a month-long period would normally result in an addiction and some form of withdrawals. There are tapering strategies on /r/kratom, but if you think you aren't addicted, you can jump straight to 10gpd. I can't say what's the best practice, different people report different results. What I'm doing is that I take just one dose a day (5-6g) and also make peace with the fact that it's not possible to long term maintain the effect