Awww...poor baby...I don't blame him. I think those ecollars are awful....did you try a onesie to keep him away from the sutures? That usually works well. Did he get pain meds?
Are you looking for an ointment to use on the incision? I would ask the vet about that...I got in trouble cuz i gave Buddha a bath like 5 days after hsi surgery...oops...didn't know that was a no-no.