A great luxury...
If grandparents are nearby and can help out, that is a great luxury.
Some even move-in to help, but that is not always available or possible. Whenever mom/dad must go away for long periods, it is always difficult, so a helping hand is of tremendous value. Grandparents often help, but it is not their duty/responsibility. So, i suggest asking/talking to them for help with a solution. Good luck.