Note that the graph you’re referring to, that people post all the time, is inaccurate. That’s not a graph of “workload”. It’s a graph of the number of items you have done lessons but not burned yet. That doesn’t mean you see those every day - the vast majority are locked for some time delay until you can review them again.
If you were to draw a graph of wk “workload”, meaning average reviews/day, then it would have 3 phases.
Phase I, from start to when your first burn reviews start coming. Something like:
Where the dotted line is about 9x the rate you do lessons. That’s because every item goes through every SRS level at some point, so you should see them all 9 times. By the time you start burning items, all 9 streams are coming at you at once.
Phase II, from starting to burn items, to level 60 lessons complete:
[flat line]
Phase III, once there are no more lessons:
Now one by one, you’re finishing off each SRS level stream and re-doing straggling failures. The bulk of the workload is gone very quickly, but you’re not done-type-done for months still.