<opinion>
I'd be far more concerned if your flights were next week as opposed to sometime in September.
While I would agree with you that I would want to rearrange things to my liking (rather than the airlines) as soon as possible, the airlines will be far more interested in next week's flights.
Thoughts on when airlines should respond to changes welcome.
Mine are on the order of a month to 6 weeks in advance given the number of schedule changes currently in the works.
</opinion>
Fred