If you had a big moonface while on >20mg Pred then being at 5mg - yes, it would start to disappear. But, VERY slowly. Once you have been on such a low dose for around 2/3 months, it will be mostly gone, but you still wont have your old face back exactly as it was. But, it will be very minor.
BTW, when you are tapering from 5mg, I would suggest going down in 1/2 mg increments every 2/3 weeks. Sounds silly, but it makes a huge difference. I have been on pred for many years now and have learnt the hard way. Im down to 3mg.
Abatacept Trial since Feb 2008 (Induction Period)
Back on Pred - 5mg - Steroid Dependent :-(
Predfoam Enema - Had to stop as not allowed during trial
EPA Fish Oils, Various Homeopathic meds
Asacol x 9, Lialda (Mezavant)
Remicade every 8 weeks (Stopped working)
Aloe Vera Lily of the Desert Juice Gave me the worst D !
Primadophilus Reuteri Probiotic