NICA coach here as well, with at least one child–sorry, “student-athlete”–racing since 2017 (and with 6 more years to go). Agree with everything that’s been said
–Start with your team’s coaches–if none are experienced or feel comfortable with helping you with a program, ask them if there are any coaches in your league who work with athletes
–Depending on how serious you are, it might be worth exploring whether there are any non-NICA development teams in your area. These are a way to pool resources, especially for coaching, that can help with development outside of NICA. One of our local dads got some sponsors and started one, set up a contract with a professional racer/coach with local connections, and it’s been quite successful–the 3 oldest in the first cohort are all racing in college (and one is even on a leave of absence to race for the UAE development team)
–The advantage of working within NICA, or with a local devo team, is that you have people you can ride/train with, share rides to and from races, help with support at races, etc. If that’s not available, there are some coaches experienced with working with younger athletes who can work with you remotely, although unless you’re able to get a recommendation from someone you trust that’s riskier, and it’s going to be completely on you to communicate with the coach, complete the workouts, etc. I don’t think my son could have done that at 15.
One other thing to think about is that anything outside of NICA above some advice from an experienced local coach is going to have some costs associated with it. This is already an expensive sport, between bikes, gear, travel, race registration, etc, and coaching will add to that. Make sure as you explore options that you be honest with yourself and your family about what your goals are, what you’re willing to do to try to achieve those goals, what those efforts mean for you and your family in terms of time and money, and how you’re going to try to balance everything else (school, other social life, part-time job, etc)
Final advice is things change, and that’s OK. If it doesn’t work to have extra coaching this year, it might next year. If you and your family decide to give it a try and for whatever reason, you decide in a years time that you don’t want to do it anymore, that’s OK, too.