NO! Don't sugar. You'll make beer bombs, as in they will explode from over carbonation.
Did you put your priming solution in the bottom of the bucket before you transferred? That alone will usually mix the solution into your beer enough.
Some of the bottles are going to take longer to carbonate than others. It's normal. Sit on that beer for at least 2 more weeks. They'll all be carbonated and taste better too.
If you are really anxious, brew another batch this weekend. Use that nervous energy the right way.
Primary 1: Pale Ale
Primary 2: Pale Ale
Primary 3:CA Common