Hi I remember that time too. Arvy is nearly 10 months now and a real sweetie so hold on in there. The most valuable lesson I learned is there is always time out for nipping or other attention getting behaviour. Put a puppy house training line on him and as soon as he nips without talking, put him in another room for no more than 2 minutes then let him out. If he does it again put him out again. Also we found Arvy nipped and was more a pain in the a**e when he was tired. They really don't know when to stop and puppies need to sleep a lot so put him to bed. My routine was something like out to toilet, then play 10-15 mins, then bed, this was about an hourly, hour and half routine at that age.
Good Luck Kate