Have you had anyone look at your running technique?
Where on your foot strikes the ground is am impacting factor.
The shin splints return because you aren’t addressing the cause of the shin splints.
What type of shoes are you wearing? This may be an impacting factor.
Missing internal hip rotation is an impacting factor.
Episode 249: Improving Hip Extension (And Internal Rotation) for Running
Episode 142: Tight IT Band and Hip Flexor Fix: Runners?
Mark Bell did a hip internal rotation video for Kel
Episode 230: Squatting With Turned Out Feet? Hey Duck Squatter, IR Yourself.
Episode 221: Flexion + External Rotation Hip Opener