It’s always has been Father’s plan.
Abdulmanap Nurmanogedov ( Khabib’s father ) put his plan into place when he took in Islam to his gym and started him training with Khabib.
As Khabib’s journey to Lightweight glory became reality, 2nd phase put into place to focus on Islam.
But sadly Abdulmanap passed away due to Covid and Khabib made the decision to retire and took over the coach role and guides Islam in his journey to become UFC champion, which has come true in UFC280