How to be more discreet?! Tips needed!

ETA: thank you so much for the tips guys, if anyone has anymore please keep them coming! What an empowering community.

I'm just 8 days in with my second baby. My first was bottle fed - this baby is almost exclusively breastfed, it's just come naturally so I'm learning as I go.

How on earth do you manage to be discreet in public? I had an emergency C-section and I'm starting to feel well enough to leave the house. My breasts have gone from barely a B cup pre-pregnancy to a generous E cup - will they shrink a little now my milk has come in? Baby also has a tongue tie which we are booked in to have assessed in a couple of weeks, so latching can be an issue.

At home I just pop a full boob out - obviously I can't do that in the middle of a restaurant/cafe. I have since bought some nursing bras and nursing tops - but I honestly feel so exposed, until she has latched.

When I've seen other ladies feeding in public, they're so discreet.

Any tips?