When you use the words "church" and "passover", it sounds like you really were never a jw. A jw would never call "The Memorial" "Passover". Just curious about that. Was that intentional?
Your parents may be getting a tongue-lashing about you not being in the cult any more. They've greatly increased their socialization with fellow members recently; they may be experiencing some snubbing themselves--a loss of social status due to having a child that left the org. This is just a guess.
Couldn't you just ask them about it? "Gee mom and dad, you've been acting strangely lately. You are picking on me about petty stuff, such as the color of my daughter's room. <give more examples of strange behavior> Is something wrong?"