I don't recall the exact date, but, like yourself, I was a little tardy to the party. I spent the next 3 months or so evaluating all the Q drops and Trump twats.
I was not a Trump fan, but was also not a never Trumper (nonAmericanon here) znd this is what convinced me that Trump was giving comms in his twats.
https://www.nytimes.com/2018/04/08/nyregion/trump-tower-fire-art-collector.html
Note the date coincides with the Trump Twat.