Our retention rate is around 95% right now. Less people getting out means less people coming in.
You would need the bachelors to apply for OCS. You will not be able to apply directly to flight school. If selected for OCS, if you are extremely lucky, there may be a flight school opportunity if you earn a high rank in your OCS class. If not, you would go to the fleet and have a chance to apply later, but only for a limited time.