However, his son, Zak, said that they're trying to move forward.
"We're doing okay," he told Us Weekly. ""We're acclimating to the new normal. Everything is step by step."
Zak, 31, is the oldest of Williams' three children. He also has two half-siblings Zelda, 25, and Cody, 22.
Robin Williams was 63 when he died this past August of an apparent suicide.
However, he left behind a legacy that his son cherishes.
"Dad had almost a childlike love, and he shared that love with people, with everyone," he said. "And that ability to love, and that ability to be generous and giving and kind is something we would want to share with future generations."