A startup requires a lot of effort. If he is still excited by the idea and can work on it, then go for it. If he is finding that he is a different person, that's fine too. Everybody responds differently.
I know that with the loss of a family member, the general guidelines are not to make major choices for a year or so. If he is graduating from college, then that may not an option.
I know that with the loss of a family member, the general guidelines are not to make major choices for a year or so. If he is graduating from college, then that may not an option.