Sounds like he has started the teenage phase - can be more of a challenge than the puppy stage
Biting, not listening, recall out the window, generally being defiant - you get the picture.
Good news is, it doesn't last for long. In the meantime, go back to basics: shove a toy in his mouth when he gets bitey, up the training, make sure he is getting enough sleep during the day (enforced if need be - they won't sleep if there is anything going on) and stock up on wine and chocolate (for you, not him!)
You will get through it - we've all been there. My last cocker, Coco, had me near to tears numerous times, refusing to come back in the park - she would stand just out of reach and run off when I got close enough to put her lead back on! I laugh about it now, and you will too. What I learned from having a puppy is, don't stress about it, it will fall into place, enjoy them when they are little as it doesn't last long and, when they get old, you will wish you could go through it all again.
Good luck, it does get easier