Do your ATC career, plan for early retirement (20 years/age 50, or 25 years/any age) there will be plenty of time for you to fly after ATC, plus a pension in pocket. Stay current, rent/buy/join a flying club... Air Force Reserve and Air National Guard units are looking for pilots, network with brother/sister ATCS, some of them know pilots. Civil Air Patrol checks that “volunteer block” on some airline apps.
I know quite a few Controllers that are flying post FAA career.