I gave OA(Link :https://leetcode.com/discuss/interview-question/1234592/amazon-oa-may-2021/1043340) on last week of May and got my 3 out of 4 onsite interviews completed by August 10
Below are the experience for first three rounds.

Round 1
Solved 2/2
Questions were word break and Rotten oranges.I gave brute force solution for both of them and the interviewer asked me to code it. After I suggested BFS method for second one, he didn't ask me to code the optimal one)
Round 2:
Solved 1 completely and another one partially (tried my best but couldn't answer follow-up)
One question was validate BST which I succesfully completed but second one was Jump game. I did the (A) part but the followup was to find the count of minimum number of jumps which I couldn't solve.
Round 3:
Deepest dive into my projects and asked one LP which I answered but the interviewer didn't get what I am saying immediately. Finally he asked me some basic idea on filling a sudoku board where I told it can be done using backtracking and when he asked to draw it's backtracked state, I couldn't draw that.

After going through all these, please suggest me wheather I will get call for final round or not. Previous experiences like these are also welcome