I have never heard of a KH meeting on Monday since the WT WT study is Monday night and Betllies cannot make it. But if there are any changes it has nothing to do with stopping the preaching work. According to the org book, the purpose of the cong is the preaching work.
It is my opinion though that the preaching work will not continue for more than a couple of more years at the very most. I also think that 100 years of preaching just about covers it because it is senseless for people not to experience some consequences in their lifetime for rejecting it. Seems to me that everything should converge after the WT is out of Kings County and established in Warwicked if that long. Just my view. Something must happen.