CCS/TMS320F28377D: How to make the ADC sampling every 2 or 3 switching cycles?

Part Number:TMS320F28377D

Tool/software: Code Composer Studio

Hi,

In my circuit, the switching frequency is 300kHz, so the switching time is 3.3us.

SOC starts on the epwm CTR=0 match,  so ADC happens every switching cycle. Please see below the blue one, which is ePWM counter, and at the time of A1, A2, A3, SOC occurs.

I think my time is not enough, so I want to do ADCs every 2 switching cycles. Please see below the red one, which includes two switching cycles or 2 original ePWM counters. How to do it or what is the settings?

Thanks!