I suggested a game that I use to reinforce recall in my dogs. My dogs love this game and they are learning at the same time. It strengthens that "memory muscle" if you play the game often, so they can't even help themselves but to come to you when you say "come".
Here is the game:
1. Instead of feeding your dog's meal in a bowl, throw a few pieces on the floor.
2. While they are gobbling those up, run to a different location & yell "come" in an excited & happy voice.
3. When they get to you, say "yes!" and throw a few more pieces to the floor, run to a new location & yell "come!"
4. Do this until you have fed the entire meal.
If you feed every meal this way for a few weeks, they will come every time. They can't help themselves after being so conditioned.
BTW, dogs LOVE this game & they're learning a very important command at the same time!
Here is Daisy demonstrating how we play the game. She has gotten so good at it, she just automatically turns and runs to me.