A week after the interview, I called hr and received a text message: Sorry, this week.

Yes, because if he doesn't want to use it, you will say that he will contact you when he has time, and will not give a definite time "next week". But as can be seen from his reply, he has not clearly wanted to hire you, and he is still hesitating, so they will come up with an answer on whether to admit you next week, so wait until then.