Keeping in touch regularly keeps the momentum going! It’s therefore very important that we do this. 
Check out the public calendar for an overview of the meetings being held mostly on Discord, which is closed-source and doesn’t provide end-to-end encryption. The global monthly communication is described here.
In case you want to transition to an open-source, private and secure solution, then you may use Jitsi which is the online video/voice conference solution here on the forum.