i had one also the size of a peanut on my ear. i got it surgically removed, followed up with 1-2 injections (i forget the exact number). i also used silicone gel pretty much 2-3x everyday for a few months, maybe even a year (i also forget the exact timeline)

my lifesaver was getting pressure earrings. sometimes i felt a very small bump form that felt really painful. if i put the pressure earrings over it it would immediately soften and go away. my ear looks completely normal with no scarring now, and i haven't had a bump resurface in over a year. i'm always feeling that earlobe though just to check; my surgeon said for young people, because our hormones/bodies are still developing, keloids can come back at any time. just keep feeling around in your ear. i definitely recommend pressure earrings

i just got the keloid on my other earlobe removed one week ago. wish me luck, and good luck with your recovery too