Pandawife,
You bought 6 packs which means that you got 12 packs? That's alot! But since you have 3 babies, you will use up very soon. If there's no stock for M size, you can order and pay first and collect when the stock comes. The staff will call you. This is what I did. I wanted to get 4 packs of M size but they only had 1 pack left. I paid for 2 packs first and will collect the other 3 packs later.
You bought 6 packs which means that you got 12 packs? That's alot! But since you have 3 babies, you will use up very soon. If there's no stock for M size, you can order and pay first and collect when the stock comes. The staff will call you. This is what I did. I wanted to get 4 packs of M size but they only had 1 pack left. I paid for 2 packs first and will collect the other 3 packs later.