Since I am using thicker yarn ( left over from a baby blanket ) and bigger needles, I am reducing the number of stitches between the chevron sections. I am going down in needle size to further shrink it down, approximately to a size Newborn to 3 months.
Looking at the chart of head circumference by age, I only want about 2” less. (6 months 17.75“; 1 month 15“).
I will also knit less height.
CO 85 on #5, change to #6 after five rounds of garter stitch.

Here is a good chart on the circumference of the head:
https://www.jasfashion.com.au/buying/buying-guides/head-n...