Hey there! I notice you are in Fort Washington

I am in Radnor


wow! what a small world! A few suggestions:
With the chewing..he is probably teething..what we did were a few things
1st we tried yelping when he nibbled on us he kind of looked at us funny and did stop but then really didn't know what to do so we taught him the word kisses.. whenever he gives kisses or is forced to give kisses cause mommy sticks her face right in front of his LOL!! we say good kisses, good kissyboy etc..
Lastly what we did for the little nibbler was cross our arms when he began to nibble..after a second or two we would give him another chance and if he nibbled again, the arms were crossed again... I can't say for sure which worked, maybe it was a combination of all of them

As for the come command...we are still working on this...but we are doing basic obedience with the Philadelphia Training Club so you may want to look into it...what they are teaching is first try and get the dog to come on a 6ft leash and then gradually go to a 12ft. I think most importantly is consistancy...think of what you are going to say and use this command each and every time..we use Here Biggs...real original hahahaha good luck and maybe we can get together sometime for a playdate.....