The chores in a dream, represents the responsibilities you have in your waking life. The more detailed interpretation could be found on the explanation of the dream such as Housework.
Dream dictionary: Chores dream meanings
You are trying to overcome difficulties in your home environment, but also feel overwhelmed by household chores.
The dream about your grandchild, denotes to the memories and rebirth of the ideas and thoughts in general. Perhaps you have lots of experience and now you can start things from the very beginning. The dream also represents your family and its importance to your life. On the other hand, the dream could show the tiredness you are suffering from while doing all of the chores and duties.