I have four females that started laying and than suddenly stopped. There about 16-18 weeks old, laid good for several weeks than started to stop. I'd get maybe one egg every other day and one that looked like it was really soft, than they completely stopped. I have them on artificial light but that's not helping. Nothing had changed for them except after they stopped laying I bought the highest profile feed I could find at 23% which is only 2% higher than what I was feeding. I'm looking for any suggestions? Thanks!