I have a 10 month puppy who I trained to ring the bell to go outside. We had a baby 3 months ago and even through the chaos he was still ringing the bell. Although sometimes we were busy and not able to open the door right away or at all (especially if he was wanting to go out for fun and not to potty). Anyway, about three weeks ago he stopped ringing the bell and now constantly whines. I have tried to ignore his whining and Have been working on retraining him and rewarding him for hitting the bell. It’s been two weeks and no progress. An ideas on what’s going on or how to handle this?