Harris is being outworked, plain and simple. Her schedule is very light.
As for Daca, I think whoever wins will wait for the Supreme Court to take action. After that, Trump will use Daca as a bargaining chip to get more of his immigration agenda through Congress if he wins. As for Harris, I am not sure.. It seems like Immigration and legal status have been a taboo subject for all Democrats since the border issue.. No one wants to say anything in case it triggers a caravan.
As always, Hope for the Best but prepare for the worst