It is hard to see unwell one do things they need/want to do knowing that there is only limited time left @CheerBear I very clearly remember my Nan doing those things too until she became too unwell - then every minute I spent with her was special. You and the LF will look back on those special moments with both fondness and sadness but they will be memories you can hold onto forever.
It is very tough seeing how both unwell and well ones are dealing with all this but that is their way and so it has to be okay. It is good that you are helping with appointments and they are in return ...and you get some Pudding time as well 🐶
It is a hard thing to work through - you are probably already grieving for unwell one either though they are still with you and that is tough to have to deal with. Spend as much time as you can with them - that will mean the world to them Hon and also to you 