One option is to stop the vehicle for 10~15 min. Other option is to install external CVT fluid cooler.
For temperature monitoring, you have use some obd2 device which can read CVTF temp. Not all of them are able to read it.
If you drive mostly in city or on motorway with in limits, you don't have to worry. The temperatures raise to alarming levels on hilly areas or when you driving aggressively.
I posted about my personal experience on my trip to north.