@Gelati: no. Didn't try to feed him whenever he is up at night. Waking will becomes a habit and will be hard to get them sleep through the night in the future. It is quite disruptive for sleep if u feed them. It is different for BF because baby can be fed to sleep. At this age, they have the ability to sleep longer stretch without food. My friend refused to feed his son one night and just held him and let him cry. That's when her son finally slept through the night afterward. He was 8 months old. My friend said that she had reached breaking point and bit down the tongue doing it.
Dh and I have the dilemma of what to do with the left over. We want to donate them but we aren't allowed (wa is allowed I think). We don't have to decide now, though.