@Ziggy I figured out that it was actually the image effects I was adding to each image. I was using a parallax type effect on a few of the images, and that was causing it to get thrown off on mobile... Unfortunately, I just had to remove the image effect and opt for static images. I tried finding some code that could work, but most people posting were just directing people to use the image effects in the image block.
I'm not sure if it's just me or other people are experiencing this problem with mobile, but wonder if Squarespace will release and improved version of the image effects to where it works seamlessly on mobile as well. It looks great on desktop.