I read at the wrong version of xc6210. Sorry. But the same kind of problem is still there. Looking in the datasheet for the regulator, the maximum power dissipation can be estimated to around 350mW based on the board size for cooling. Incuding the shottky diode voltage drop this gives a maximum continues current of appr. 290mA without the ESP32C. The peak current of the ESP32C is 335mA with RF active so I should still not recommend to draw any external current from the 3V3.
/Anders