Ooof! At 12 weeks don’t mess with your supply.
I’m at 10 months postpartum and have just now felt alright doing 16/8s. Fasting is about lowering insulin during periods of restriction. Pregnancy and nursing is a period of growth.
Your baby is using your milk (filtered blood! Metal AF) to determine what kind of environment they’ve been born into. You want them to get the message that there’s plenty of food and not to worry about it. Even if your supply can handle it you don’t want them to get the hormonal message that there’s a lack of resources. This period of growth and expansion in your life is so small, try your best to cherish it and good luck!
I found oat milk smoothies with peanut butter, dark chocolate, oats and banana helped maintain my supply while pumping for my preemie in hospital, super satisfying and filling, plus oats and nuts are supposedly said to increase supply.
I wish you the best of luck on your BF journey!
Don’t fast- your body is burning 500 extra + calories. You need to eat - and you can very healthy choices, but please don’t fast - esp 12 weeks postpartum. Even if you weren’t breastfeeding I wouldn’t recommend fasting 12 weeks postpartum - your body just went through a lot.