Cut your wheel in half. Put 1/2 aside. The next cut will be parallel to the first center cut. In other words a long cut that will be just slightly smaller than the diameter of the wheel. That cut will be the thickness of the finished cheese, so adjust accordingly. Now cut into blocks to what ever size that you want. Trim rounded waste or leave it as a bonus. Repeat, repeat, repeat.
If your starting wheel is too tall you can always cut it in half horizontally.