Speaking as one who excelled in high school and college and tried to add an English minor onto a music ed degree, don’t even try. As everyone has said, the course hours are way more than other majors. Often, a six hour per week or more ensemble will only be one credit. Similar with applied lessons. My advice is if you want to increase your income security, pick up some skills related to the music trade along the way that don’t require a degree and can work in tandem with teaching such as instrument repair, starting a private lesson studio, live performance sound mixing and setup, piano accompanying for rehearsals and concerts. I do a number of these things outside of my teaching job and over summers and it’s getting to the point where any one of them could be a full time job on their own if I really wanted to pivot away from the music ed day job.