Bb2 3 day routine then phase 1-3

For bb2, are we supposed to start with the 3 day routine then do phase 1, then phase 2 then phase 3?

If we have already done bb1

Or do we start at phase 1 and the 3 day routine is for someone who has less time to train?

Bodybuilding 2 has a 3-day version for those who either prefer lifting on 3-days per week or are otherwise limited on days they can train.

The 4-day version is a fine place to start otherwise.

-Jordan