Hmm... He needs a lot of resources to keep up with super accelerated aging. He was already killed a lot of people before this arc and with with an addition to killing a few more people after destroying Tamayo. There still a lot of time before he gets really hungry and stop thinking at all.
Hmm... I think this is a good move to give pressure on Muzan; that the Demon Slayer Corps are not the only ones on a time table. With Nezuko coming in a few chapters, he will run out of energy faster if he tries to give chase on her while defending himself.