RIP Holy cow!!!!!!!!!!
Two months and you're already at the Chorales step!!? Starting from zero!!!??
Double holy cow!!!! Congratulations!
I'm trying to read since practically forever (decades), and using SSRS since at least early 2018 and I am still at level 3 (in the "reading" VP part, I'm at 6 in the "keyboard orientation" one, since I can play all scales in all keys -- and in parallel, contrary thirds or sixths). How did you get there?
Well, for starters, I definitely can't sight read better than you. The fact that I started using the chorales doesn't mean that I've mastered all the VP's, I just mastered VP 2, and then I started combining other elements. I am confident that the process of learning to sight read cannot be put in a recipe, so I take the elements I need from various methods, and discard others. I truly believe that George Dandelot's method is better, for example, especially when doing the exercises with a metronome.
Do keep in mind, that I also don't learn much repertoire, and I don't practice the two pieces I half know for more than 20 minutes to half an hour daily, as I concentrate only on reading.
Here is a real life example of what I can sight read. Not with ease, mind you, but at least I can mostly sight read it.
As you can see, it is an extremely easy piece. Chorales are there to challenge me, because they require much more skill, having all those damned voices.
I just believe that this time, in my musical path through life, that I need to learn the language of music first, and only after that, to learn its literature.