I think people forget, that after getting a lapband, is that a calorie is still a calorie.
This is not going to prevent you from over eating.
It's not going to prevent you from not needing to exercise & watch what you eat.
It's probably time to re-evaluate your daily caloric intake.
Are you food tracking?
How many calories are you taking in a day?
What is your exercise/fitness regiment?
I'm not familiar with your band sizing, nor fill amounts, so I can't comment on that.
But, the band is just a tool - it's not a miracle.
You're still a new bander, so you're still figuring things out -- with time, you'll hit your 'sweet spot'.