Do you have a new dog or puppy? Are you struggling to find opportunities to train with them because your older dog kicks up stink? When a second dog is added to a household, things can change in unexpected ways. One of those is that training stops.
Why is that?
Usually it is because the first dog objects strongly to being 'left out' while the new addition receives attention and play/food.
This is both difficult to deal with and causes us to feel guilty. Training is no longer fun and rewarding for us so we stop doing it. Rest assured, the guilt thing is totally normal. If you've not had two dogs before it can be a bit of a shock and the dynamics certainly get turned upside down.