Just to add one more option… you can transfer the project to Resolve yourself. Once you have sucessfully transferred the project, assign clip colors to the different cameras in the media pool, then organize the layers on the timeline based on the clip color. Use Timeline > Select Clips with Clip Color to easily select all the clips of one color at once.
Then export a DRT (timeline) and DRP (project) and send that to the colorist along with the source media used in the Resolve project. You can use the Resolve Media Management tools to consolidate the media, with handles, to reduce the amout of material to only what is needed.
If you are going to learn a new NLE, learn Resolve and use that to edit your next project, not Premiere Pro. Your wallet will thank you as well.