It's a natural thing that Tim is more relying on Tony and Manu to take care of the score as he's getting older. He did the same last year, because of his injuries.
Him, Pop, Tony, Manu, everybody knows the most important is to be in shape coming playoffs time, as he was last year when everybody said he was done.
If it means a few games of, and Tim not forcing his game at times, I'm fine whit this. When yo play for big games, big moments and you've already win it all, it's not so easy to give it all, every night.
But be sure he'll be there when it really matters, as always. And probably cos he will have saved some juice and nerve impulse during the regular season.