Follow-Up Questions: buccal filler after buccal fat reduction? What is the best filler for movement and appearance?

I previously posted i had Buccal Fat reduction . My lower face is now very gaunt and angular , smaller than my upper face. in addition my smile which used to frame my face is flat ( the muscles don't seem to be supported anymore)now 3 months post Op swelling all gone.I am not in a position to get fat transfer due to downtime until next February at earliest, so i was wondering what filler is best for look( not weighty) and moment (so it can support my muscles around my mouth and return my smile?