The good news, such small comfort as it is, is that there’s really not much now that needs to be done in an all-fired hurry. The sudden slowing of the pace is disorienting at first, but you’ll probably welcome it soon.
My condolences to you and your loved ones. It’s never easy to lose a parent, and it’s not something you will get over quickly. Cherish the memories you have, and remember the good times.