I’m suffering from the same at the moment.
I kneel on the floor with my feet behind me, it stretches out the fronts of your shins. It hurts if you’ve buggered your ankles in the past though (my left ankle is knackered from being ran over years ago)
Try massaging the area lots too, and ice packs really help. Rub the inner boney bit down towards your foot, pressing all the knobbly bits out of the way.
Or see a Physio :)