Try wearing 2 pair of socks whose combined thickness is less than the 1 wool pair you're wearing now. The first pair -next to your skin- should be a sock liner made of polypropolene or silk or some other material known for it's wicking ability....the second pair worn over the wicking socks can be made 1/2 and 1/2 of wicking material and wool. The point is that the layering and the wicking will help you overcome some of the sweating problem by providing an air space and a water delivery system (delivering the sweat away from your skin).
If you combine this with using anti-persperant on your feet and thoroughly drying out your boots each evening it should help.
You may also consider going to a Pac-boot and changing the pacs and socks at noon each day.....and buying at least 3 pairs of pacs and socks so you can constantly rotate dry ones into the boots.