Does anyone know when or how soon school slots will become available for 68C school?

Reclass slots are like smoke on the wind, here one second and gone the next. You can submit your reclass request once every 30 days. Also, your career counselor can pull all the available training seats from a report. There is no specific time or season when MOS producing class seats become available. It's best to check back often.

Quotas are allotted to all major commands and then distributed to subordinate units at the beginning of every FY. Check with the S3 shop or your schools NCO. They should be able to see what quotas your command has available to them.