You can read the guide here:

https://docs.google.com/spreadsheets/d/1KqtchncYie7-ODgcCmTXBmWwnOvgyV2uCJDYUpqidBw/edit?usp=sharing

If you wanna optimize it even more, do the jump/character swap trick to move 2 or even 3 characters at the same time. I find it really annoying so I don't do that too often.

You can watch video tutorials below. You should also watch my IL videos under "Level Leaderboard" section on the left. I've been using some newer strats than those posted below.