Hello there,
1st of all, congratulations for having a lovely daughter.
For baby's feeding problem, i would like to give you 2 advices-
1) Clear baby's nose( by nasal saline drops)....coz if nose is blocked,baby will find difficult to breath while breastfeeding.
2) Attach and baby to breast properly and comfortably, can watch videos for that.
Next Steps
If still not helping, keep trying with said precautions, some babies may take some time to learn well.
Health Tips
Also do Kangaroo mother care for 1 hour everday.