KH would be Kingdom Hall.
This behaviour is typical of a JW, especially one who is preparing to get baptized, as he will be going through a lot of hoops to prove himself "worthy" to be a Jehovah`s Witness.
To the rest of the world, and never forget that includes 6 BILLION that aren`t Witnesses, you will be viewed as a kind, caring person, that I`m sure you are.
Please bear in mind that it`s not you showing an unloving attitude.
Rather, like a drug addict or an alcoholic, your friends behaviour has been changed by joining what many of us believe to be a dangerous and at the very least anti-social , so called religion.
I hope things work out for you.
All the best
Paul UK