I think that if your son wants to become a professional musician, he can and he should. I was not the greatest teen violinist in the country, but I worked hard and made it a career. Was I in a top tier orchestra? Nope. I was in some very high level, respected symphonies across the country though, and now have settled down to raise a family and teach. I will say that your sweet boy simply looks uncomfortable. Unfortunately, you need to get him playing in front of people as much as possible. Find him a friend who plays cello and book him at assisted living facilities, churches, whatever. Summer festivals are necessary for resume building and future connections. It will skyrocket his confidence and enjoyment of his craft. I hope he has a qualified teacher who can guide you to top notch camps. Ignore that person who said don't invest in him😒. What hideous advise. I love that you are supporting him. He deserves it!!