How can I resize this crocheted hat pattern for an infant?
First of all, you need to figure out your gauge (sts &amp; rows) using your #5 hook and the yarn you want. Using your baby inches, see how far off you are from the pattern. Use that as a rough ruler for following the pattern. You'll need to keep to an even or odd # of sts in your baby length, but also notice the group sts and how many sts they take each so you'll have the right # of sts to work into. Does that make sense?

To begin with, I would suggest you reduce the # of rows in the band, so it won't be 1/2 of the hat unless you want to make a cuff with it. You'll have to keep track of the rows so you'll know when to start a new one and when to decrease. 

I can't tell you exactly how to decrease without dealing with the pattern and your gauge. I suggest you see how the first several rows after the band shape up and look at how often the pattern suggests dec. It's not the end of the world if you have to take out a row or 3. It should be pretty quick work; it's not a complicated pattern.

I hope this has been some help. When I increment or decrement a pattern, I just have to wing it beyond a certain point. As I said, taking out some rows won't take long to re-do.