Talk:Special Investigation: Jurakutei/@comment-29695952-20181031200018/@comment-190.164.231.45-20181031204414

You can return to the citadel without losing your progress when you defeat the mini-bosses (red nodes inside the map). You don't lose your progress and your remaining steps with that. The game will ask you if you want to go back to the citadel after the battle, so you can take it as a chance to change your team.

Also, the mini boss nodes turn blue after defeating them, and are set as returning points if you retreat after that, so they save at least part of your progress.

So I'd say, wait until you reach the next boss node, and take advantage to change your team.