3mth old baby

Hi mummies, my baby is 3mths old now. Suppose to be growth spurt period. How come he keeps cannot finish his milk for almost a week? Suppose to finish 100-120ml but he always drink till 80ml. I am using Philips avent air vent nipple size 1. When do I know when to change to size2? Any advice pls?

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growth spurt for every baby is different, the schedules u see onlines are just a guide. ive never changed my lo teat size from birth till 1yo, always used size 1.

3-6 medium flow nipple with 3 holes