Are yo aware of scripts that allow you to choose radicals and kanji lessons ahead of vocab, and also do important reviews (radicals and second part of kanjis) as soon as they are there? If you know material already, it’s no that difficult to get level in 7 days, especially if you skip some vocab lessons (not recommended in general).
This guide was already posted in this topic, but here it is again, it describes how to go fast: