MISERY- I'm sorry you are going through this with your JW folks. Remember, they are just cult mind controlled. They do what they do based on guilt and fear - the two legs that the WT society walks on that they instill on their members. That's why your dad used guilt on you " you'll make your family sad " to guilt you into not stopping attending meetings. JW members learn the guilt and fear tactics from the top of the organization and pass it on to relatives and others . Many cults do this, witnesses included. Some of my JW family does this to me, an older sister and my two adult daughters, but not my parents.
Just try to show human love to them and I would not bring up JW topics to trigger their insecurities towards you. If you control the conversations about non-witness topics then perhaps your mom and dad won't wig out so much. But ANY JW will wig out if we talk witness topics with them . If you haven't read " Combatting Cult Mind Control" or " Releasing the Bonds- Empowering People to Think for Themselves " by Steve Hassan, I highly suggest it . It gives very good advice on HOW to talk to cult family members. Good luck, Peace out, Mr. Flipper