Mammy changing my name?

?
After getting several
confused comments from people about the sex of my pup after hearing HIS name
, I'm considering changing it. However, he is 19 weeks already and I'm concerned he might get confused...
Recently when I got him, I red and red and had a hard time deciding for a name

. My
younger sister named him Sugar, and I accepted after concluding that Sugar was a name for both sexes. However, people are always inferring that he is a SHE.
Do you think he can learn to obey other name? Any suggestions (name)??
I appreciate your opinions and comments!