Hi,
It can be so frustrating! Now that Tyler is 6mnths, I was wondering, how are solids going? Is there a particular reason you need to introduce a bottle? You are doing such a fab job - feeding for 6mnths, that's great. Many babies never ever have a bottle, so it's not a necessary part of baby development.
The key to getting baby to take a bottle is quiet persistance. Don't get upset. Maybe fill it with water and let Tyler play with it, become used to it.
Warm Regards
Barb