Have you tried a dark room with no lights/distractions? Its the only suggestion I have... Though that probably works easier for littler ones who forget about the outside world quickly

I wouldn't worry too much about the day feeds & just feed her through the night. Mine were similar at that age & just weren't interested, but they picked up again later on.

And mine liked to try doing somersaults while attached as well She's not needing to rely on it as much now as when she was little, so I wouldn't worry too much about it if she's happy enough through the day without.