Wah, MiniMe, your bb so fast on M size liao. I only upgrade 1-2 days ago.
Ivy, yes the marking on the packing cannot follow exactly. I actually tried M slightly earlier, abt 1 week ago, when the teat starts flattening but bb cannot get used to the faster flow, so continue with S size for a few more days. I only change to M-size 1-2 days ago, when I find that he sucked the teat for 5 mins but milk level didn't get lesser and he almost felt asleep. After changing, he is more comfortable and drinks faster. Gotta observe before fully upgrade to the next size.