Studying two instruments in music school?

Thanks for replying! It’s my friend who is doing the Music Ed/performance double major. I do want to do composition, but I can’t get into that degree until the end of my sophomore year of school. I just don’t know how or if it’s a good idea to try and do clarinet and piano at the same time? I could try doubling with composition and performance (even though performing isn’t my strongest thing) which would be clarinet and piano.

So sorry if I’m making this confusing!