The simplest tool for this kind of job is probably ClownBD. It’s a bit old now, but it combines the best of the various demux and remux tools along with a pretty straightforward frontend - you’ll be able to simplify the set of video and audio streams that make it to the final disc, and (provided they’re BD compliant) they’ll transfer without reencoding.
It’s still available here: https://www.videohelp.com/software/Clown-BD
Do take note of the other tools that will need to be added to the installation folder before it can work (such as tsMuxeR).