It lives in my room and I spend a lot of time with it. The reason I wasn't too keen on it imprinting on me is because I will be going to college in a couple years... but now I do kind of want it to imprint on someone, if not me, then one of my family members. It does have mirrors in its tub and Otis likes to lay in his food dish...
Since no others hatched, won't you be getting friends for him in the future? If so, I'm sure he'll adjust to you being away at college, if he has other friends to keep him company until you come back.
It would be ideal if you could try and find a friend for him, of a similar age and size.
For now, he's lonely and you're all the company he really has. My first duckling was alone for 4 days, before her sister hatched-I let her imprint on me and boy did she imprint! Hours of cuddles and letting her follow me around on the floor. Lots of bonding. She adjusted just fine at the arrival of her sister and they've been great ever since!
I still have a very close relationship with both.
Some people are somewhat against letting them imprint, but personally I think its okay, especially in a situation where they are without siblings. My little Dougie would have been so lonely, even with her mirror and teddy.
If you want to let him imprint, you could put him on the floor (in a safe place, no dogs or cats in the room, no hazards) and walk slowly away from him, see if he will follow. This is a natural urge to them, to follow, as they would with their mama, and it's said to strengthen the bond. Otherwise, simply sit with him and let him grow more familiar with you.
I'm sure the two of you will be best buddies soon