After reached a climax of 100 last week, my score fell to just above 80% recently. It doesn't mean I could get 80% in the real exam because I did these concept checkers as soon as I finished the LOSes, and also, there is no time-limits. This 80% means that 20% of the total concepts are not fully understood by me. So there is nothing to be proud of but there is something to worry about.
There is a long way to go, I will move fast and I will review again. Things might go better if I have an overview of the accounting part and if I can review it again.