why not continue feeding protein into the fall and winter? Mix in a little corn, soybeans, or peas if you want to, but a little extra something for the bucks to eat after losing some weight chasing does isn't a bad thing.
If it's the price that's getting you on the deer feed there are several alternatives. I currently feed high fat 12% horse feed with trace minerals. Deer in my area are hitting it regular. I pay $8.35 per 50lb bag which is the same price +/- I'm currently paying for corn. Lamb and goat pellets work good but may be a little more pricey similar to deer feed. Cow pellets and/or range cubes works too
"A hungry dog hunts best.” Lee Trevino
No other type of feed will do any better during that time of the year... when they have the ability to eat were they want to instead of a feeder and get more if not the same amount thats were they will be.... not even a big flashing neon light will work