I believe it to be a waste of time talking to, reasoning with, JW's if you expect any kind of quick result.
Many of us when we first wake up think that 'coz TTATT is blindingly obvious to us, it will soon get through to our JW loved ones.
This simply isn't so for a couple of important reasons. The first is that, if someone believes something is True, or The Truth, to them it really is, without doubt, true. So whatever you say must be wrong somehow.
The second problem is that JW's simply do not have to use, or pay any attention to facts and logic. An attendant problem is that I have noticed most of them do not pay attention to what you actually say anyway.
I do however think that, kindly and thoughtfully put, our words may very well plant a seed, so do not give up altogether, just don't expect miracles.