Your utilization is sensitive because you’ve only got $700 in available credit.

In a few years, between limit increases, perhaps picking up a few more cards, you’ll have a much larger amount of credit available to you and your utilization will stay relatively low.

My monthly credit card bill is between $5k and $7k, but between the seven cards I have open, I’ve got about $80k of available credit. My utilization is much lower than yours, so my credit score is pretty stable.