How can I build my lower legs so that they are in line with my 28” thighs?
I am 5’7” tall and have been working my calves hard for 6 months now with not too much result.
Why build 28” thighs? You have gone overboard. At 5’7” your thighs should not measure more than 24”.
First off I suggest that you cut out all heavy back squats and allow your thighs to reduce down. Then work your lower legs one day heavy and one day light. The secret of making a muscle big is by keeping the capillaries gorged with blood. We cannot increase the number of muscle fibers we have but we can increase the number of capillaries within the fiber.
This can give you far bigger calves than you thought possible.