Hi my friend! My baby had the same issue at 9weeks! I was an exclusively pumping mum, so I couldn’t offer her my boob.
So you can try to change to a bigger teat, cos babies may get frustrated when the flow is too slow. Or you can try different position to feed her (my baby drank only when I stood on one leg to bounce her). When all these failed, I fed her only when she was slping :(
It may just be a phase, but it’s an extremely worrying one for any mummy! Hope this phase shall pass quickly for your baby ❤️
Cherlyn