I used nuk. But also used simba a few times during first month. Could it be that u are using a big bottle? A big bottle tends to release the milk faster. Use the smallest bottle for ur baby which shld be abt a 120. My boy was like that that time it is overflowing like mad and he is like struggling to Keep up and drink everything v quickly. After change to nuk which is also a smaller bottle it was ok le
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