I have been commissioned in the Army, and have my BOLC scheduled for 2019. Is there a way to start BOLC earlier?

CPT (Join to see) you appear to be a direct commission officer. You’re BOLC may not run year round or that is the first available seat. Call you branch manager and see if they have an earlier class opening. The Services are limited to the total number of officers by grade by federal law, this may also explain the phasing you are set into. You may be ready but your slot may not be. Welcome to the Army. I loved it.