Your talk about points (and in the quantities listed) does not match up with my experience on e-Rewards, so I'm afraid I can't give any suggestions. (My account is listed in $s not points and redemptions start at $10.)

If you have available surveys (look when you log in) take them. This helps with two things- one, you might earn enough points to redeem. Two, you might can an invite to some special "panel" that allows you to keep all your points for the coming year.