Preauricular sinus pit drainage. Is ok?

Hi My kid (12 years old) has had a preauricular sinus pit since birth. No drainage from it until recently.  We saw white fluid drained from the pit in February. It's been draining since then. Saw a pediatrician, and 2 ENT doctors.  So far he has taken 3 antibiotics so far. Taken Cephalexin for 7 days, bactrim for 10 days, clindamycin for 12 days. No relief. The drainage is still coming through. It's white and no smell. It comes when we pull the ear. It also comes when we don't pull the ear.  It's coming through the pit most of the time during the day. Mostly he will wear a band aid on that pit during the day and it comes out once we take off the band aid.  ENT said we can do surgery to close pit. But they said it's risky to do when discharge is still coming.  I am worried about going for surgery now. I am currently living outside India and planning to come to India for the surgery.  Does this need done immediately? Or surgery can be done later? having discharge for 2 months is ok?