is this how the "worldly ones" are treated? Are JW's encouraged to keep their distance from someone who isn't yet baptized?
Yes.
Watchtower 1994 Feb 15 p.24
"We must also be on guard against extended association with worldly people. Perhaps it is a neighbor, a school friend, a workmate, or a business associate. We may reason, 'He respects the Witnesses, he leads a clean life, and we do talk about the truth occasionally.' Yet, the experience of others proves that in time we may even find ourselves preferring such worldly company to that of a spiritual brother or sister. What are some of the dangers of such a friendship?"
http://www.jwfacts.com/watchtower/quotes/worldly-people.php
Maybe they think you're not progressing fast enough or have some ulterior motive, like being interested in a JW and studying just to get close to them. Take a look around this site, freeminds.org, and jwfacts.com and learn about the other side of this religion. The decision is up to you ultimately, but I recommend you get far away from it. If you get baptized, there's no easy way to leave. Their god is small, petty, vindictive, and monstrous not something you'd really want to spend eternity worshipping.