Fortunately for me, one of passions is programming computers, which pays a lot of money. After spending eight hours a day programming computers - who am I kidding? I can't program my computer eight hours a day - Never could. Fortunately, my company gives me several hours of meetings every day and so I can program computers in between and not get burned out. There is the reality of having your passion and your job being the same type. You're gonna get burned out. There will be times when you have to do things that are boring and tedious and you can't put it off until later when you find the energy.
Fortunately, I have multiple passions. When I get home at the end of the day, I couldn't possibly sit down and program anymore, but I can cook a good meal for my family every day. Even cooking I have to clean up after myself, which is, let's just say, not something I enjoy. Often the rest of my family will help clean up, but I have to take a part of that.
I've been playing mandolin for almost 30 years now. I regularly hear someone who is actually good at mandolin playing. I'm just jealous at how good they are. But the reality is, because it's my passion, but it's just something I'm an amateur at, I don't have to be good. I can skip doing those three octave major scales. Many people are better than me - Many of them haven't been alive for 30 years and yet they're a lot better than me. But I can tell by listening to them play that they haven't skipped a lot of the practice that I've skipped over the years. But that's okay because this is just a passion and if I don't feel like it, well, I don't have to feel like it.
So my question is, what is your budget like? And what is your personal passion for piano? If you love piano, there are a ton of online study programs in piano. There are a lot of local music teachers who can teach you piano, the parts you're missing. Firefighter isn't the best income, but I'm sure that you could throw other parts of your life away and thus come up with the money to take a degree in piano.
You can probably find a local college that is willing to give you a music major for a small price. And since this is just something you're doing for fun, you don't have to do that piano degree in a couple years. You can take eight years to get a piano performance major (that is, as a part-time student, only take two or three credits a semester). There is nothing wrong with that because it's not going to be your income in the future anyway.
Do you really want to though? It's an option to get the music major, but you have other options. You are perfectly justified in saying, "you know what, I could do that, but I'm not actually interested in it. I'm going to do something else at a time". Maybe you decide, piano is interesting but taking up too much time and you get yourself a tatting shuttle and learn another hobby which is even more useless than any of the others. More power to you. Or you can start on the piano major and along the way you discover that there's some required class in something that turns out to be become a new passion for you that also turns out to pay a lot of money in so suddenly you switch majors to and you find a new job. Great if it happens and if it doesn't, well who cares you already have a career
I have a large external battery that I carry at camp at times. Mostly it sits at my tent getting charged on solar, but I have carried it for an short time to charge my battery while doing something else. The youth at the camp don't carry a phone, but I often get asked to look something up for them so it is useful. Not to mention when there are no adult activities to keep me i entertained.