Is it possible to switch to rice paddies in a year that is expected to be rainy?
I never knew anybody that grew rice, so I really can’t say.
As far as I know it is a grass and doesn’t require any special equipment to plant or harvest, so I would guess that you could plant it in place of wheat.
The real problem with growing rice is that you need a place to sell it. In my area I don’t know of any grain elevator that buys it. So, a farmer that decides to grow it may have to truck it a long way to sell it.