Um… Hello!
I’ve also done a shorter guide that is more specifically to your question. The short answer is, no, you don’t have to do all you lessons at the same time. The medium answer is, no, you shouldn’t do all you lessons at the same time, at least, it isn’t helpful really.
Once you get to level 3 and up. You should be releasing kanji and radicals at regular intervals. I recommend you complete them asap, because kanji and radicals affect level up. (This means radicals the first day, kanji the second is fine.) Vocab can and should be split up over the days in between when kanji and radicals are released. If you do you reviews every day, you should release new kanji/radicals every 4 days or so.
I find 20-25 lessons a day is a nice, albeit fast, past. No shame is doing less lessons days, but not much to gain from doing to many more.
If you would like a longer answer than that I can provide one, but I hope that is a helpful start.