Just do it and sleep well at night
My mom's Civic has a CVT and it also requires a fluid service at 25K, under severe service oonditions
So I just went ahead and did it a few months ago, since it only gets used for short trips, and I happened to be doing the 25K service
It obviously has a drain plug, a fill hole, but no dipstick. There's a plug at the side, for checking fluid level, just like on a manual transmission or a rear end. The fluid was kind of pricey, but I bought it at the dealer, just to be sure it met the correct specs.