This has been well studied and documented in the mountaineering realm. There is really not much you can do short of spending money on a acclimation tent to sleep in. The fact of the matter is you need time spent at altitude, preferably not involving stressful activity. Lengthen your trip by as many days as you can spare and spend some time relaxing before heading out to hunt. Otherwise, it is going to suck.
I have a partner who comes out from sea level and spends a week in town (6500 feet) and another week in camp at ~10,000 before the season opens. You really need to sacrifice some vacation times for acclimation: drive some FS roads, soak in the hot springs, eat a steak house, sleep in, take some naps, etc.