I definitely think that's possible! I haven't taken the test yet, but in the last month I've gone from getting around 167 to an average in the 170s! The biggest changes I've made (and this might sound kind of ridiculous) are getting at least 8 hours of sleep and exercising almost daily. I normally study around 2-3 hours daily, but I think my stress about the test/classes was really getting to me. I feel that sleep and exercise have significantly reduced my stress levels. Also, my lowest section was RC. I spent about a week focusing only on RC with a few logic games to keep myself fresh, and by the end of the week I'd gone from -5 to -1/2. If there's one section that's more difficult than others, drilling it for a few days might be a good way to improve your score.

Btw, congrats on the 167 and good luck if you do decide to take the August test! :)

I'm not completely sure, but I'm hoping it will be announced by mid July. However, I'm guessing it will be flex because there are a lot of places overrun by covid and some cities (like mine lol) are still on lockdown.