It is normal to have fewer goals when you are older. The time we still have is smaller than the time we spent on earth. It would be a pity if we had many goals because we would never be able to fulfill them all. But you are a father and a grandfather and as such you have a goal. Maybe you think they can do without you, and one day they have to, but now you build up memories for your grandchildren because you can tell them stories about the past, for example, stories about the grandmother they never knew. I hope the present still has good things in store for you!
For now, I wish you all the best with your mother and I hope she will die peacefully when her time has come.