Double check your local Walgreens ad, but:
If you buy any Enfamil tub and one refill you'll get $7 Register Rewards to use on your next purchase. You should be able to use coupons on the tub and refill if you have them. I believe you have until Saturday to do this, as the new ad will come out on Sunday morning.
I did a very similar deal over the weekend on diapers.