My wife brought out something that made me feel unsure

My fiancée recently brought up something that’s left me feeling unsure she wants me to try drinking her breast milk.
I’m 27, she’s 29, and we had our baby about two months ago. After she recovered from giving birth and stopped feeling sore, we started being intimate again. Before the baby came, when we would have s*x, I used to ki$$ or $uck on her nippl*s a lot because it drove her wild she loved it, and it always got her really excited, often finishing fast. So, the other day, she asked me to do it again, and I was happy to. Since she’s breastfeeding now, milk came out when I did it, which I expected.
I wasn’t surprised by it at first it didn’t irritate me out or anything. But then she took it a step further and said she thinks it’d be “intimate” if I actually nursed from her, like lying down and drinking her milk on purpose, almost like a bonding thing. She seemed really into the idea, like it’d bring us closer in a s*xy, personal way. When she said that, I didn’t know what to say. I told her I’d think about it because I needed time to process it. Truth is, I’m really confused. Part of me wonders if this is okay like, is it safe to drink her milk? Is this something other people do? I’ve never even thought about it before, and it feels kind of strange to me. The idea of drinking it on purpose doesn’t sit right yet, and I can’t shake this awkward feeling about lying there, svcking on her nippl*s, while our baby’s sleeping in the nursery next door. It’s like, that’s the baby’s space, you know?
I’m just trying to wrap my head around it. Does anyone else do this? Is it a normal thing for couples, or am I making it bigger than it is? I don’t have any experience with this, and I’m not sure if I’m weirded out for no reason or if it’s okay to feel hesitant. I’d really love some advice or opinions anything to help me figure out what I think about this. I’m open to hearing whatever you’ve got.