Cabin V/S up or down

[A.FLOOR]

You are flying along at FL410. Cabin altitude is 8000'. Delta P is 8.1 PSI.

You notice a crack in the windshield and consult the QRH.

It says
Max FL is FL230
Use Manual press. control as required to set

Delta P = 5 PSI & Cabin alt = 8000' (AT FL230)
Delta P = 5 PSI & Cabin alt = 6000' (AT FL200)
Delta P = 5 PSI & Cabin alt = 3000' (AT FL150)

Any ideas how you would handle this ?