SYAG – thank you for clarifying that it should not be necessary for a mother to nurse in an untznius fashion in public. That was an aspect of the topic that I can’t comment on, since I have no experience with it, so I am glad that someone with experience did comment on it.
Although, come to think of it, since I have never in my life seen a Frum woman nurse in an untznius fashion in public, despite the fact that I live in Frum communities where, B”H, people have lots of kids bli ayin hara, and yet, I have never heard of a baby dying of starvation in these communities, it does seem pretty clear that that is the case.