My breeder told me to feed Patti during the teething stage
dry Kibble because it's crunchy and helps loosen the teeth.
The biting stage is very hard and there are lots of past conversations you can research on this forum on tips to get threw this stage. I tried lots of different toys such as nylon bones. One of the best toys I had was a long 1.5 ft snake that squeaks. Any long squeaky toy works. It's long enough to play tug of war without getting hands bit. Patti entertained herself a lot with that long snake. Robe toys with stringy ends are something tiny puppies can get their mouth around, chew on and are good for playing tug of war. Those soft yellow squeaky tennis balls that are about the size of a golf ball was another favorite. It's soft and small enough they can get their mouth on it, squeak it and carry it around. Patti learned to play fetch. We still play fetch with those balls.
Our ex-pen was located in a busy kitchen-family room area. That room had two entry ways. The ex-pen closed off one entrance and we gated the other. Patti was able to wonder in and out of the ex-pen when we had "eyes on her." She was confined to the ex-pen when we couldn't watch her or left the area.
This helped in the biting stage. You want to teach your baby how to mouthed and not bite. It's a process. When your puppy bites too hard you can immediately place him in the ex-pen for a brief time-out. 10 second-a minute or longer if you need a break. Then let him out. Or, when the puppy is out of control you place him in the ex-pen for brief time outs. You can also say OUCH! to let him know it hurts.
At the biting stage Patti kept our hungry grandkids out of the kitchen when they were 12 and 14 years old. When they would come into to eat they sat with their legs up in the chair because Patti would nibble on their toes. We had lots of different toys. It's a good idea to always have one near by so you can stick one in their mouth.
I think, those small split antlers would have helped if I'd known about them at that stage. Karen, our most experienced Havanese owner who owns three and shows dogs only has antlers as chew bones.