Heed Yr gynae advice.
My #3 was a time 9mths old when I was pretty with #4 and was advised to stop breastfeeding as it will affect nutrients to #4. At that time, each pump was at least 150-200ml.
Yr nutrition for the foetus is as important.
Alternatively, u can opt to get blessing of breast milk and continue feeding Yr #1 until Yr #2 comes along then u can go for tandem feed.
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