He won't. There's a reason that this run came right after Chris Paul went out. He knew he needed to step up until he returns. Once he does...Harden's going to ease back.
I dont think home court is anywhere near as necessary as being rested and healthy... If we just make it into the playoffs rested and healthy - we can beat anybody... regardless of home court advantage... otoh if we run guys into the ground in pursuit of reg season glory - we will be dead in the water come playoff time... If we had a healthy LMM and didn't lose CP3 to injury - we woulda won it all last year - that was evidenced last year - not the necessity of hca... ...imo...