[gemy]

Yes that is one technique. He nips/nibbles on finger and you push finger in the mouth. The dog should gag if not the technique is not quite as effective. Be careful though our Yorkies mouths are so small.

Going after another spot is not unusual, not desirable, but not unusual. I think for him as his pattern is going after another spot; then remove him from your company; pick him up and put him in his crate or xpen, with a firm No, No bite. Let him stay for 5 minutes or so; then if he is not crying to get out, open door and let him out, with only a mild good boy, out you come.

The other thing you might try is to hand feed him his meals. Kibble by kibble. He must take the kibble gently, or no kibble. You can ask him to sit and reward him. Ask him to come and reward him; Etc.

Also umblical leashing is a good tool as well. You harness your dog up and put leash on harness and wrap the lead around your waist. Where you go, your dog goes. I've used this too for my hard boy,and it helped a lot. Just don't overdo it. Maybe a month no more of this umbilical training; coupled with hand feeding his meals; and I'd hope you will see a big difference.