Fix recyclerview drag drop auto scroll problem inside nested scroll view.

Project is in Android Studio with Java Native So I build a recycler view which has copy, delete and dragdrop feature. I have a problem in drag and drop feature since recylerview is inside nestedscrollview. The recycler view cannot be auto scrolled when I drag something up/down to the corner of the recycler view (which it will auto scroll if I put it outside nestedscrollview) However I still need the nested scroll view to scroll the "mandatory content" outside the recycler view. Second, I need the auto scroll speed to be consistent. (Not accelerating from slow to very fast immediately like the default auto scroll animation on recycler view) So there will be 2 milestones, $20 1. fixing the auto scroll inside nested scroll view when we drag an item to top most / bottom. $30 2. fixing / modify the autoscroll speed to be consistent. (Not accelerating very fast) I need this to be done in 2 days maximum as currently I am busy on another project and cannot troubleshoot this issue. PS. any code modification should be accompanied by a remark (what this code do and why it's work)