Our orientation class (1/18/24) was I think 48 people. Indoc is then scheduled by seniority (cadets>DECS>FOs) and our orientation class was broken into 3 indoc classes about 2 weeks apart. We had 11 days between orientation and indoc, the next class would be 2 weeks after that - so on and so forth. It is entirely dependent on sim availability. If you're an off the street first officer, expect to wait a while for orientation. Some waited weeks, some months. There's no telling how long it will be.