I think he skips IW, plays Paris as a tune up for ATP Finals.
Also I see some news of him playing Davis Cup, not sure about that.
Afaik. On his official website his schedule is empty atm. https://novakdjokovic.com/en/schedule/
Novak in Belgrade, Serbia, with racket in his hands and smiling, two days after that historic and heartbreaking match.
Stay strong Nole, it was a great season, that is still not over and glory and YE#1 yet awaits.