I was taught 2/1 about 15 years ago but I only play it against the robots now (I play a forcing club system).
The only info I have is fairly old, "Understanding 1NT Forcing" by Marty Bergen and Paul Thurston's "25 Steps to Learning 2/1". I can ...
Whoops the auction is wrong. I bid 3♥ after 3♣, then robot P bid 4♦. I still don't like the 3♣ bid. Why else are we playing forcing 1NT in fourth seat?