Extremely itchy skin, super dry

Hi all, I have been on accutane for almost 3 months. Recently, i’ve noticed that my skin is super itchy and super dry no matter how much moisturiser I put on. I live in Australia and I use cetaphil moisturising cream but often use dermeze intensive ointment when my skin is more on the itchy side. Any recommendations as to what I can use or any other methods as I am really struggling.

TIA : )