Help Please Dogs Nails overgrown

Hello all, I need your advice.
I have a mature yorkie.due to my being ill ,not able to do her nails and vet letting me down.
her nails are well overgrown and curling to side.
Vets don’t like to cut them while she awake as she is petrified also
you cant see the line where it bleeds if you cut too short.
Q. Does that latter partgrow with the overgrown nail.Or does it stop at the normal length and just the nail grow.
I intend to slowly gently reduce the nails a little at a time to get them back to normal.
I purchased the nail clippers today as her old ones disapeard.
I don’t want to do any harm, so your expert advice will be welcome.
many thanks Jenn.

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