@pablo2210 This approach to working towards headstand push ups by Yaad Mohammad:
He collaborated with others on the program, including Antranik. https://antranik.org/hspu-tutorial-yaad/
@pablo2210 I'm doing exactly the same thing right now. I just added the Yaad exercises, plus some time to practice handstand balance, on top of the normal RR (rather than replacing one of the excercises).