Can't help you with a trainer, and sorry for your luck having two chocolates.
I'm kidding!!! I'm kidding!!! I love chocolates.
If the 3 year old retreives, there is hope. It will take someone with savvy, but it can be done. same with the pup, if it will retreive then it's just training to tell it when and how. The trainers I know are way busy and a year behind.
It 's too bad you aren't closer, I'd love to help.
If you can find a retreiver club, there are people that train nearly daily and are always looking for new people to train with. It takes a few people to get a good training session working.