Frankly- none of my boys had to wear a cone at all. When Tigris came home he was still really shaky on his legs and then climbed the cat tree for a long nap. Plus these cones are so hard.
I would check how he behaves without cone and if he does not start to lick the wound all over I'd let him go.
I am so glad that Felix is not declawed and send him some nosekissies.