This question came up in the Online 10-day Retreat Nov 3, 2020, guided by Delson Armstrong. Day 6 was part of a daily 30-minute discussion on the suttas, the Dhamma talk and reflections.
Slightly edited to improve readability
You want to continue to let go, because even within the meditation, if you start identifying with it by looking at it and paying attention to it, from there craving and proliferation could arise. You don’t want that to happen. The only thing to do at that point is to always 6R it, always to let go of the Formations.
If you pay attention to the Formations, it’s not only going to create craving and proliferation, but it’s going to take you obviously out of the jhana. And then it’s going to create further craving, which will create further Formations.
Instead, when you see it, allow it to be there, understand that it’s there and 6R it and come back to your object.