Answer:
I do believe so
Explanation:
In The Reichenbach falls, when Sherlock gets into Moriarty's cab, he has no facial hair. However, when him and John arrive at Kitty's place, one hour later, he appears to have some. Also, it is mentioned in The FInal Problem that he had a brother, and upon further investigation, his recordings took longer than 5 minutes, and he had 5 minutes with Eurus, for the first minute just being creepy.
