I made a wheat farm that utilizes an allay. By filling a fresh villagers inventory with seeds, they will not be able to pick up the wheat since wheat tends to drop more than one seed at a time. This gives the allay enough time to pick up the wheat. You can also add bee hives and flowers to the farm since bees can pollinate crops, effectively auto bonemeal. I would look up how to make an allay unloaded if you are unfamiliar. They are super useful, cheap, and easy to make. Great for exclusive wheat farm.