@Civil, note that "under 30%" actually means 28.9% or below. If you're paying interest, aim for 27% or below. That will avoid being bumped over the threshold when the next month's interest is charged.
In addition to being below 28.9% (27%) overall, I'd also try to make sure that each card is under 28.9% (27%).
Also consider that you have until February to get the bonus. If you think utilization will improve further in a month, take advantage of that.