"Load More" button on Gallery Page

Site URL: https://www.seasonscateringca.com/photos

I have finally figured out how to have captions appear only in lightbox mode, thanks to a lot of help from some users on these forums. However, the amount of photos on the gallery page and the content in the captions is so much information that it crashes while on mobile. Is there a way to have only a set amount of photos load at a time, then when they get to the end of that section, have a "load more" button to load more of the page?

I hope that makes sense.

I would also like to know this!

Bumping, anyone have a solution to the above?

Bumping again as I'd love a solution to this too.