This video will show you how to drain and refill the transmission fluid on the 2007-2014 Honda CR-V. This transmission has a internal filter that is not servicable so you should perform this procedure at least every 30k miles. Fluid and crush washer was purchased from Amazon and listed below is a link to them.
Honda DW-1 Transmission Fluid: https://amzn.to/3O1DogA
Drain Plug Crush Washer: https://amzn.to/3K7deId
Large Long Funnel: https://amzn.to/44RL7EQ