My upper lip is getting bigger and the middle part is stretching with time! (Photos)

You would require an in person exam to ensure there is no tumor or other issues which are causing this.  Once we rule that out, a standard lip reduction of your upper lip could be performed.

Expertise is required for lip reduction surgery of the lower and upper lips. In fact, the lower lips are reduced quite differently than the upper lips. I have performed the surgery for 15 years and utilize a HIDEF approach that uses an incision at the wet-dry mucosa. 
Revision of the lips can be performed to improve symmetry and reduce tissue swelling. 
Best, 
Dr. Karamanoukian
Realself100 Surgeon