By Matt De Lima A couple of 2022 prospects are trending up and down, so both cases follow the golden dynasty rule: buy low, sell high. I’ve written about Justin Fields quite a bit this season, but what I don’t believe I’ve mentioned is that I was very anti-Fields in 2021 and far from bullish on him up until about three weeks ago. In my Week 8 Dynasty Stock Watch last season, I lambasted Fields (and Zach Wilson) for needing more time. I went so far as to say I didn’t believe they had even NFL starter upside. At that time, I was told I was wrong. I wasn’t wrong, until a few weeks ago. Through We…