Indy's vets fees please help

Hi my name is Jane and I'm trying to raise funds towards vet fees for my Border Collie and best friend Indy.

Indy is 12 years old and is on heart meds vetmedin for the rest of his life, I am just managing the costs of these expensive meds along with the consult and prescription charges which are every 3 months.

But what I thought was going to be an affordable stage 1 dental clean wasn't, they found a swelling/lump in his mouth which required a

biopsy and further dental work, I've borrowed to pay the unexpected £1140 fee leaving myself in debt but he still requires stage 2 dental estimated at £1758, plus whatever the results of the biopsy. All I'm trying to do is give my Indy a pain free extended life and any help I can get would be much appreciated. I exhausted all my savings on his brother Jake's dental over a year ago so really looking for help please. Many Thanks.