Am I doing something wrong???

I go back to work in a months time and its been quite nerve wreaking getting my daughter used to the bottle of expressed milk. she refuses the bottle and only wants from the boob. she can tell its breastmilk but she refuses the bottle.

I pump milk and store it for her as I would love to feed exclusively breastmilk till she is atleast 8 months old.

ive tried many different bottle teats and not getting it right.

I feel like im running out of practice time and that the daycare centre will battle to feed her.... HELP!!!!

any tips on how to get baby to latch onto bottle, so far I have tried Tommee tipee, Avent and NUK and no luck!!!