The phrase "fall into place" means that things are finally starting to come together or make sense. If you're looking for other ways to express this sentiment, you could say that things are clicking, falling into line, or falling into step. Another option is to use the idiom "fall into place like pieces of a puzzle." Other synonyms for this phrase include fit together and mesh well. No matter what phrase you choose, the important thing is that you're expressing the idea that things are finally falling into the right arrangement.