I just wanted to post a follow-up to share the success I had in averting upset today. DS' (wonderful!) aunt looks after him for an hour a few days per week while I exercise. Today, while I was getting showered and dressed after my workout, DS and his aunt were reading a book that featured a scene with a baby boy wailing, "I want my Mommy!" Aunt's theatric reading of the line sent DS into a full-blown half hour meltdown of tears and wailing about me leaving him, which even nursing (our magic bullet) couldn't assuage.
Fast forward a few hours and he requested to read the same book again. I skipped ahead to the end of the book and we discussed the mother's joyful reunion with the son and acted it out. I reminded him of the separation scene. When it came to the line, I read it matter-of-factly withou drama, and he was fine! We both enjoyed the book thoroughly.
So, long story short, the recommendation worked well! Thanks again!