My puppy turns 6 months next week, and I honestly feel as though I'm at a standstill. We have been working engagement and fun obedience since he was 8 weeks old- I've always rewarded for eye contact, marked any correct behaviors that he's offered, and have been luring and free shaping commands.
I've noticed in the past week or so that our training sessions have felt...off. He's suddenly much more distracted by other people and dogs, and loves to sniff the ground instead of engaging with me. I have put no pressure whatsoever into his obedience so far, so I'm having a really hard time understanding what changed. I don't allow people or dogs to greet him, he gets limited interaction with my other dog at home, and I try my best not to drop food during training. It very much seems like he woke up one day and decided that I wasn't as fun as he thought I was anymore, which is pretty disheartening.
What should I be doing differently at this stage?
He's my first working puppy, so any advice is welcome. Thanks in advance!