I think it depends on what country you are applying from. I applied 1 month 1 week before departure in NYC. 1 month later it still hadn’t been approved. When I went down to the embassy, they told me they process the applications based on when you say you are departing not when received. They approved me that day.
I recently applied for an e visa (nyc) and on the 30th day I went to the embassy to inquire. They informed me they review the applications by the date you are leaving not in order of received. I would suggest going to the embassy and inquiring in person to get it processed faster. I went and received my approval email the same day.