Keep in mind that the SRS intervals listed in the Guide is incorrect. For Levels 1 and 2, the SRS intervals are as follows:
2 hours, 4 hours, 8 hours, 23 hours, 7 days, 14 days, 1 month, (4 months?)
I haven’t tested for the last two intervals (I haven’t gotten that far in my second account yet), but that’s probably right.
After level 2, the intervals change to:
4 hours, 8 hours, 23 hours, 1 day 23 hours, 7 days, 14 days, 1 month, 4 months.
Getting an answer right moves you to the next interval, getting an answer wrong moves you back an interval, and getting wrong multiple times in one session… may move you back more than one, i’m not sure. I know when I fail burn reviews (the 4 month interval) it moves me back
New items unlock after the 4th interval (23 hours for levels 1 and 2).
If you haven’t done so already, try to visualize the mnemonics given by the website, hopefully it’ll help you with better recall…
EDIT: Verified for level 1 radicals, SRS intervals are 2 hours, 4 hours, 8 hours, 23 hours, 7 days, 14 days, 1 month. It seems like for the first level 1 kanjis, the first SRS interval is 4 hours…