Welcome to Yorkie Talk!
Wonderful people here. My Sami has had teeth issues most all her life. Even with twice yearly dental cleaning she to was losing teeth. So about a month ago she had infection starting in her molars that were left, she had all remaining teeth removed. Trying to brush and I say trying just didn't seem to help her. Well now she has no toofers but has healed and is getting along just fine. I think in her case it was genetics that played a roll. My other two are fine. If they need to come out it'll be OK. Just adjustment for both of you. Do you know how many she has left? This has been my experience but there are soo many knowledgeable people here that might have some good ideas for you to try.