When can I get dermal filler for my upper eyelid after upper blepharoplasty?

I recently had an upper bleph and unfortunately I developed hypertrophic scars. The surgeon treated me with steroid shots to flatten the scars. I’ve been wanting to get eyelid fillers with another surgeon since the bleph was too aggressive and left me with hollow eyes. How long do I have to wait to get the filler after the steroid shot? Thank you!