The last time I bought feed for my chickens I got 24% starter instead of the 20%, I don't know what I was thinking. On top of that I've fed them 1/2 the bag before I realized it. I have 10 Buff Orpingtons that are 7 1/2 weeks old. How big a deal is this? Should I abandon the remaining half bag, or is there something I can "cut" the remaining feed with to reduce the amount of protein in the feed? Any help is appreciated.