Have you consulted a specialist? What does your veterinarian recommend?
You may find this article helpful, excerpt below: https://www.mspca.org/angell_services/malocclusions/
“Malocclusions likely have a significant genetic component, but some can be prevented by early diagnosis and treatment. Proper oral evaluations of puppies should be performed during every vaccination visit. Keeping the mouth closed and lifting the upper lip provides the best evaluation of occlusion. If a malocclusion is noted in a puppy, treatment should be started relatively soon. The most common treatment is extraction of the teeth that are occluding into an improper location. The sooner this is done, the more time is allowed for any genetic potential of normal jaw growth. If malocclusions are not cured by this treatment or are not diagnosed until after the permanent teeth have erupted, then orthodontic treatment will be recommended. Some orthodontic treatment can include extraction of maloccluded teeth, in addition to careful movement. Any orthodontic treatment other than tooth extraction should be referred to a veterinary dental specialist”.
