How about a case for the Fly More Combo substituting the RC Pro 2 for the RC 2?
Some of us have the Mavic 4 Pro Creator Combo that included the RC Pro 2.
Amazon.com : Honlyn Waterproof Case for DJI Mini 5 Pro, Storage Bag Portable Handbag Box Carrying Travel for RC Pro 2/RC 2 Controller Accessories : Electronics
Yes, it is tight. The key is not putting anything in the top zippered compartment to retain its flexibility to stretch over the top. Be careful with the zippers, but it will zipper and unzipper while on the shoulder strap around your neck...