It’s very helpful to go back and forth a few times between jhānas five and six—1-2-3-4-5-6-5-6-5-6—staying in both five and six for at least five minutes each time to let them deepen. You also want to become skilled enough that you can enter this state of infinite consciousness and remain in it for 10 to 15 minutes before moving on to learning/entering the next jhāna.
