Honestly, a lot of the trading in Dec. / Jan. was better than more recent trading, despite appearances.
On days where profit was on the low end, I kept to my plan of only trading mostly 5 or 10 share positions, so I could keep learning and practicing.
More recently, I've been scalping 100 and 500 share positions, but this strategy definitely is not sustainable. The r:r is ridiculous, but I lucked out. I know one day it's not going to work, so right now I'm trying to go back to more reasonable risk management.
The most significant change began in Dec. when I got a PDT account. It's not only that I can enter short trades regularly now, but I'm seeing the charts differently. After the earlier fiasco, I was trading with a cash settled account and two margin accounts. With a cash settled account, it's hard not to look at charts and only see long opportunities. I could also scalp now without worrying about using up all my settled cash (but again that's not something I'm going to keep doing).
By the way, the Cum. PNL graph is correct, I realized. The "2020 Oct" at the bottom shouldn't be there.