I learned on my own as a kid in the early 70's. Done OK too as can you. I didn't need the discipline of an intrusctor to keep me going, I had HUGFE passion, and the time that a 10+ year old has. Now adays we have superior access, for example..
www.musicdojo.com
And like 62bass indicates, make the lessons far apart, far apart... meaning travel a bit and do it once a month. I'[m traveling down to Maryland for a 2-3 hour lessons form the guy I took on line lessons from. Anthony said he'd give me 5 months worth of stuff to work on. ( this is for advanced slap technique, which no one around here can teach).
After 5 months, I may make the 6 hour trip again. It works. I do like coaches. And as a professional "adult" my head is crammed with so much crap, an instructor does help me focus. Gotta be the right one. My first local one was a dud, I guess my proficiency intimidated him ( not my personality mind you ). The second one had plans to start a rock fusion band, wanted me to get a guitar, play bass for the fusion band " Your band won't wnat you whe I'm done with you"... sorry, again, I'm adult, 45, ex airborne/sf , nobody screws with my independence anymore..I just wanted to learn to improv and solo, which I really don't do well or even practice. So my luck sucked until I found Ant Wellington on line. And I'll travel for the right instructor.
You have, btw, immersed yourself in the local music scene and found how the best players are in your area? THese cats usually don;t teach in music stores.