I agree with the carrot stretches. There’s a really good video of how to do them on YouTube by evention tv.
Do you let them take the reins when your riding in walk? My mare loves this and rally benefits from it, and carrot stretches, I do 2x each side getting my mare to bend her neck as far as she can towards the back of her, and on between her legs, also to stretch her neck forward.
Ill use that stretch tomorrow! Thanks
Carrot stretches are really good! Use 3 pieces of carrot- one between the two front legs to stretch their neck down, one to the right hand side so they bend so their nose touches their side and another repetition to the left side