Hair texture does change with hormones. Ask any woman who's been pregnant, for instance. It can affect curl or waviness to some degree, but I'm not sure it's predictable which direction that will go, since your own sensitivity to hormones can be quite variable in lots of different ways. About the only thing you can be sure of is that it
will change in some ways (usually, getting a finer texture, that may allow the curl itself to have a greater impact).
This is why there are curling irons and straighteners, and a whole aisle of hair products in most drug and grocery stores.
For a long time I swore by
Ouidad products to deal with my own waviness. They are a fairly expensive salon brand, though, tied into a chain of salons as I recall. They haven't been a top priority for me since my 30s? But I did like what the products and the attitude of embracing curl did for me. I grew up wanting to be Susan Dey.