Chalazion is gone but my eye is still droopy! Why? Could this be permanent? For how long should I wait before seeing a doctor?

Best to allow eyelid to heal for about 3 months after any eyelid procedure before evaluation eyelid ptosis. You may or may not ptosis surgery. See an oculoplastic specialist for evaluation.

It may resolve or it might necessitate revisional surgery.  Generally I would advise letting the tissues heal for at least 6 to 12 months before deciding to have revisional ptosis surgery.  If you are concerned, it is reasonable to see your doctor now for an assessment.

Swelling may cause the lid to be droopy until the eyelid is completely healed after the chalazion treatment. You could have the eyelid checked by your ophthalmologist or oculoplastic surgeon at around 3 months to see if the eyelid level is improving. Ultimately, if the eyelid does not come back up to a good position, it may need revision. An anterior approach will assure precise and long-lasting results. Best wishes.