Very often food drive diminishing like that means the dog is over threshold or over stimulated/aroused. You may be able to find other reinforcers to utilize but in general, if this is the case, chances are she's unable to think clearly so you may need to work her at lower levels of distraction to help her succeed and build a reinforcement history for attention. Then build distraction level with time and successes.
Regarding attention and focus specifically....
I guess I work 2 ''types'' of attention in my dogs. First is name recognition. Foundation is the name game and it's something I play everywhere with my dogs. It's also an easy transition to the come and get it game for recalls.
The other type of attention all starts with capturing attention and engagement. This is where you'll likely need to focus a lot of your time and effort. It puts the responsibility on the dog. No asking the dog for attention. No cuing a dog when inattentive. Ultimately, the dog is rewarded for attention/focus with the opportunity to work/train. It's an important shift to make otherwise people tend to get stuck working harder than the dog and competing with the environment.
Here's a nice basic overview.
https://denisefenzi.com/2015/02/14/stages-of-engagement-part-1/
Regarding attention and focus specifically....
I guess I work 2 ''types'' of attention in my dogs. First is name recognition. Foundation is the name game and it's something I play everywhere with my dogs. It's also an easy transition to the come and get it game for recalls.
The other type of attention all starts with capturing attention and engagement. This is where you'll likely need to focus a lot of your time and effort. It puts the responsibility on the dog. No asking the dog for attention. No cuing a dog when inattentive. Ultimately, the dog is rewarded for attention/focus with the opportunity to work/train. It's an important shift to make otherwise people tend to get stuck working harder than the dog and competing with the environment.
Here's a nice basic overview.
https://denisefenzi.com/2015/02/14/stages-of-engagement-part-1/