Airlines have reduced capacity (flights) and generally fly with full (or almost full) airplanes these days. As such, demand is high and the low-cost airlines have higher prices, so the competitive incentive from the 200s is disappearing.
This close to August, you may see a small drop, so if the flight comes within a tolerable range, I would book it. Generally, I book airfare about 6 months out if possible (that is when the low-cost airlines release their schedules and the legacies release their discounted economy seats). However, award availability becomes more prevalent closer to the travel date, so if you have miles (or can get some via credit card bonuses) then availability may open up.
Good luck!