Possible to Reduce the Bumpiness of the Forehead?

It depends on which bumpiness you are talking about. If you are speaking of the bone around your eyebrows, that can be shaved. However, if you are talking about the relative bumpiness at the top of the forehead, that is not shaved. You can lessen it with fillers in the mid forehead.

Having an uneven or bumpy forehead can be distressing. Reducing the bumps can require very invasive surgery. It is relatively easier to raise the depressed areas with filler material - this can often lead to very nice results quickly. Good luck.

There are many different condiitons that are associated with this appearance some of which are called craniosynostosis. The correction is relatively complex and not as easy as it may seem ("just burr it down a little') due to the relative thickness of the bone and presence of the underlying sinus.