Except buccal fat removal, how do I remove this amount of fat? (Photos)

For unique cases where a variety of modalities could be used to treat the condition, I would suggest an in-person or virtual consultation to develop a custom and effective treatment plan. It is difficult to precisely define the best option without collecting the same information. I suggest reaching out to an expert for a consultation with surgical and non-surgical methods to get a comprehensive option. Best, Dr. Emer.

Thank you for your question and photos. Though you’re interested in alternatives, buccal fat removal is likely the best solution to reduce fullness in the area you’re referring to. Removing the buccal fat pad can provide a defined contour in the cheekbones and along the jawline.
It is also possible that adding filler to the upper cheek, as you pointed out, will provide a lifted appearance and create the balance you’re looking for. I recommend scheduling an in-person consultation with an experienced, board-certified facial plastic surgeon or injector. They will be able to determine the best treatment option to help you achieve your aesthetic goals.

Buccal fat removal will be your best option here. It's a quick procedure, in the office, and has a very simple recovery. Why not do that?