With Khloe, I keep the same food schedule regardless of what the cycle is doing (unless she's low, then I feed extra). I tried switching it up a few times based on the cycles and not only did it make it difficult to interrupt the data, but it also made Khloe a bit cranky not getting meals at the same time everyday. I personally believe it's best to find a food schedule that works, and stick to it.
I don't have any experience with doses that small so don't have any advice for measuring, but I wonder if calipers would help you at all. They are super helpful for doses that aren't marked on the syringe, have you ever considered using one?