Left producing way more than right

At first I noticed my left was producing a bit more than my right, but it was only maybe a half an ounce. Now it's becoming significantly different. I just pumped 3 Oz from the left and only 1.5 on the right. I've been offering him my right breast first for about 2 weeks now but that's doesn't seem to be helping the right catch up. Is there anything else I can do to boost just the right? The left is almost getting engorged from how much I've been favoring the right