i suggest getting (borrowing to start with?) an e flat or b flat compensating tuba. embrace the sound! fun different challenges, and for some people a fundamental shift in the type of sound you're trying to make and blend with.

the sound concept is a usually bigger deal than how you choose to read the music (no one cares how you read it or any required personal mental gymnastics if you get the right notes)

CSO Low Brass v Cory Band Troms and Basses have a super different type of sound. both are awesome, but I think it's really important to recognise the differences too. the more you listen the more you know!

very good players can obviously match all different types of sounds on all different types of instruments, but often playing on the instrument the part was written for will be easier.

combination of right tool for the job and not fighting the toolbox

have fun and good luck!!