I have used this method for wood plank flooring.
Have someone stand on the gap of the two boards (they should be ensuring the two boards are level with each other.)
Take a pry-bar (crowbar) and push the flooring from the edge (may have to remove quarter-round that is covering it).
Basically you are pushing the entire floor to get the boards to snap together. The person standing on the gap helps to ensure the boards are level with each other and prevents the other side of the flooring from moving. It can take some trial and error to figure out. You want enough weight on the opposite side so that the planks will snap together.
I haven’t worked with vinyl planks so not too familiar with them. With the wood ones you had to be careful not to break the tongue sections.
Wife taught our dog to crawl.
She was trying to teach the dog to lay down and stay while she backed away with the treat. Our dog figured that if she kept her belly on the floor and crawled over to the treat it should be fine…
So my wife said “Good crawl!”, and kept working on it with the dog. Now the dog crawls on command.