Stiff Upper Lip After Aquamid Removal Surgery

I had a surgery to remove aquamid from my upper lid a month ago. The surgeon cut the mucosal in 2/3 length of the upper lid and succeed to remove the material from the lip (not from the area above the lip). My upper lid is now softer but unfortunately it is extremely stiff - I cannot open my mouth wide and even cannot smile because the upper lead lacks flexibility. It feels like if the stitches were too tight and would prevent it from expanding. Please advise what can be done to fix it.