didn't want to go this deep but, the hell, lets do it ...
so, I started playing at the age of 4. at the age of 10 I was already champion of capital region, and that is a tournament with no age restriction. my dad was my coach, that I have to say, and he was one of the best. he produced several national champions and also mixed double european youth champion and was in team of coaches with the European Youth Champion. so - I just woke up and was surrounded with great table tennis. but ...
I had to practice. I had to do all the work. my dad was just a guide. in what is today a U13 category, I was top 5 players in the country and 3rd in doubles. in U15 category I was top 3 in the country, vice-champion in the mixed doubles, third in doubles. got called into national selection, went onto national selection camps, got invited into camps in neighbouring countries. I did all that. but when it came to talks about staying there and competing, it all stopped with - he's a great great talent, but he is too young, lets wait a bit more.
and that is what you have to have in mind. you are young, you can go to training camps abroad, but it is not necessary that they will pick you up. that is why I am suggesting stay in the US and go up the ranks there. try to get into national selection. and then, at the age of 17 or 18, try to do what you are trying to do. I would if I wouldn't destroy my left ankle which put me on the sidelines for one year at the age of 16. and math. if it weren't for those two things ... maybe I would make it into the pros. but at the age of 18 or even later. no matter what - you wont be able to do it at the age of 13 or 15 ... rare were able to do it. probably can count them on fingers of one hand.
still, these years are extremely important for development of your game. camps abroad, yes, okay, but - have a good foundation at home, in the US. and then, at the age of 17 or 18, if you are good enough, which I truly believe you could be - do it, do the jump. I know I would, if I could.