This is interesting.
Most Plastic Surgeons use a suture made of 'Vicryl Rapide' inside the nose. This dissolves over two weeks or so. So to have yours there after 8 weeks is slightly interesting...
Your surgeon can use a nasal speculum to see inside your nose. Its called a 'Thudicum' speculum, after the bloke who invented it. It looks like a bent piece of metal with small wings on it. Presumably he's done this?
Stitches passed through skin leave marks if left for any period of time. In the skin of the nose I would normally use Nylon sutures, removing them after 5-7 days. Any longer will risk leaving 'zipper' marks. Dissolving sutures ditto, as a rule. We often compromise in kids, using dissolving stitches to save the ear-drum splitting screams as they are removed, but the pay-off is a slightly worse scar.
That said, your scar will indeed go paler but will take 3 months, typically. If you're fair-skinned this will take longer (6 months, sometimes more).
If you are getting no joy with your surgeon, see your GP and ask for a second opinion... this may cost but at least you'll have an answer.