It sort of seems as though the main things are to keep your lips coated and treat them gently and keep going with lots of positive thinking until you see little improvements and then hopefully cured at some stage.
And maybe a little steroid cream here and there and sun and healthy foods etc like you said.
It's a pity for us living in the UK for the sun helping part. If I ever get cured my journey will be even tougher as I have this on other areas of my body too, so hopefully other less sticky creams can work cause the thought of gently applying aquaphor over my face and other regions seems nearly impossible for me.