[ElaineM]

Maybe both you and Mighty Oak need a little extra help to get you both through this. Mighty Oak wants to live.
He certainly needs all the support and medical help he can get to accomplish his goals.
You need some caregiver support. It is normal for caregivers to get a little tired and overwhelmed. There must be an organization in your area you can tap into for that---------an organization that gives caregivers a little respite. Maybe there is an organization that can provide help for Mighty Oak for a day, so you can take a day off to do whatever you want to do or need to do for yourself. Maybe the American Cancer Society can point you in the right direction.