Lower Eyelid Drooping After Blepharoplasty, How Long Should I Wait to Fix it?

Please wait at least 3 months...preferably even longer. I sometimes recommend waiting up to a year after the initial surgery. Now if it is a severe problem, and it has obviously stopped improving, then 3 months would be the minimum amount of time.

In addition,  there are other treatment options while the scar is softening:  steroid or 5FU injections to help soften scar, or injection of hyaluronic fillers to help stretch tissue and temporarily improve eyelid position.

See your Doctor again and inquire about these options.

Revision Surgery

Revision eyelid surgery should be done at least 6 months
after the initial surgery to allow time for healing and tissues to soften. Asymmetries, excess skin, fat rolls, fat malposition can all be improved. Other treatments may include laser or
chemical peels to tighten skin and improve texture

It sounds like you have what is called ectropion ("ek tro pea yon").  This is an abnormal position of the lower lid where the lid is furrowed outwardly.  This can be due to scarring and/or swelling.  Certain patient can be identified prior to surgery by testing how lax the lower lid is by pulling on it.  In your case I would wait to see if the position improves as the swelling subsides over a three month period.  If present after that time then some surgeons would use a steroid injection to try to soften scar tissue in hopes the eyelid would return to its normal position.  If that does not correct the issue then a surgery to tighten the lower eyelid may be necessary (canthoplasty).

Dr. ES