
So sorry you are going through this
I havent had that particular type but lost my girl 10 months ago to bone cancer which spread to other organs too, and we are now going through the exact same thing all over again with my boy, this too has now spread and our time is coming to and end. for both dogs we treated with plt tablets which kept them happy, energetic and pain free until we have to do the right thing.
I send you lots of hugs and strength for when that time comes, its so hard but when you love them so much you know when to take away their pain and make it your own. x