Hey Jeni!
Congratulations on your little darling! This is a great question, and one that can really only be answered by your body. I would suggest giving these calculated macros a try for a couple of weeks and see how it affects your milk supply. Im sure the most important thing to you right now is ensuring that your baby receives all the nutrients and calories they need, so pay close attention to how your milk supply fluctuates. If you're holding steady with milk with these macros, then you should be ok! If you notice it starts to dip, add some more calories! I typically recommend between 300-500 just depending on your body and baby needs!
