I hv similar situation, My Papa 'blood vessel tumor' broken and sent to Emergency by ambulance - just day before Chinese New Year, Doctor said only 20% chance, he stayed in ICU for 5 days then change to recovery ward for another 2 weeks, LUCKILY he is OK now.
He loved my son (4.5yrs) so much, I asked my boy to encourage 'GrandPa' - recorded and play for my Papa, he heard his voice and SMILE (Papa cannot talk with tubes in his throat), at that moment this is the only thing we can do to make him feel better.
You hv to be strong to look after your Mom, take care of yourself = force yourself to eat, sleep.
祝世伯早日康復