USB-C to USB-A to Micro for charging
I think easiest way would be to get different charger with 2 or more USB A ports.
The adapter might work, but I highly doubt it. Look for something like this one.
Finally, you can use BOB-15100 breakout board or make something like that yourself to draw power from USB-C. You can find an explanation here. Solder the wires coming from panel directly to the board and then connect it to charger with standard USB-C cable.