How Can I Recover Faster from Cheek Implants?

I would agree with my colleagues. Manual lymphatic drainage is excellent to reduce facial swelling.
Of course, swelling will be worse in the morning.
Avoid using diuretics. They will have minimal effects on the face and could cause other problems.

It sounds like you are doing everything correctly and it may just take time for the swelling to go away. You can look into lymphatic massage or ultrasound therapy as well which may help the tissues drain faster. Good luck.