I would like to ask how to change the settings of the drone camera for photos, I need to reduce the resolution, which is unnecessarily large for my purposes. Reduce from 20MP to 12MP

thank you for your answers..

There are no settings for jpg resolution.

Resize in Photoshop etc after shooting

a photo resizer might be something for you ...
https://www.faststone.org/FSResizerDetail.htm

M2P is a 20MP sensor
M2Z is a 12MP
or you might have bought even a Mini 2 if you don't need the 20MP of the pro 2.

Just curious why you need to reduce the quality as big SD cards are so cheap these days.

I create 3D models from drone photos and large sets of photos extend the computation time of the 3D model.  I also use the previous model of the Mavic Pro drone, which has a 12mpx camera and sufficient needs for me and the calculations are about 30% faster.  To give you an idea, calculations of 3D models of larger areas take up to 20 hours.  I use a powerful computer for the calculation.