They're not saying you can't return to your family, they're just saying not to congregate in large numbers. I've moved back from my apartment (Chicago) to the suburbs to stay with my parents until this lockdown ceases. Of course, we both started isolating two weeks before I came home, and they picked me up so I wouldn't have to take the train.

Just use your head, don't do things that will risk spreading the disease. Taking public transit to/from your family a few times a week is very dangerous. Going someplace and staying there is not.