Please help! 2nd image hover on mobile, how do I change it to 'click' instead???

Site URL: https://dogfish-clarinet-npzm.squarespace.com

My site password is empulse2020

On the home page there are 6 images where when you hover over them they change to a different image, however obviously this doesn't work on mobile so I would love for them to just click on the image to get the other image if this is possible??

Thanks in advance!!