I used to pump first thing in the morning, put the EBM in the fridge, take it out at bedtime and leave the bottle by the window overnight. DH would give that bottle to DD first thing in the morning - it was their special time together.
Never ever had a problem. And she took it at room temperature, which was much more convenient too!
If in any doubt, I used to just taste a little. If it tasted ok to me, I figured it's fine!
Vicky
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