As soon as you can complete the Opening Ceremony, you can travel to the Crown Tundra and enter a Dynamax Adventure. From there, you can catch the first pokemon that appears, and then attack your own team to forcibly end the run. The pokemon you caught will be level 65 and will obey you.

My question is: Could this be a timesave compared to the current route? I don't actually run this game, I found this while planning for farm for shiny legendaries on a second account.