Lap Band issue.

Does anyone have any advice for me because I have a lap band and want to lose about 40 pounds. With the band, I get full very quickly so I never get enough calories. I haven't really gained or lost any weight in about 3 years. I lost a little over 100 pounds when I first got my band,..but now,..just really want to lose my last 40 pounds. I don't want to losen my band because I don't want to gain weight, so if anyone has any advice,..I would love to hear it. Thank you.