Good to meet you linilinda! Good to hear you are still breastfeeding too, it is so good for our babies.
Your husband reminds me of mine a little...he gained a bit of weight while I was pregnant. So, he is doing Atkins as well. If I go too low carb it does effect my milk production...I notice the difference and so does Jakob...he is 7.5 months now and almost exlusively breastfed. He has solids here and there, but it's nowhere near routine.
It's better if I stick between 40-50 grams of carbs a day. My milk production seems fine at that level.