tanyah... hate to say it but bub might not EVER take a bottle.
It is a lot harder to get them to take abottle at this late stage (rather than introducing in the early weeks).

DD NEVER took a bottle. we tried all types of teats, flows, bottles etc... spent a forturne! then She went straight to a spouted cup at 7 months (we tried a bottle for months but nothing!!!) this was the only other thing she would drink from...

have you tryed anything else. A bottle is not the only answer? A cup even?