Ive been creating CDLC and they are always 4:52 min long. Any idea why?

That might be the length of the audio file you're using to author with. In EOF, you can use "Song>File info" to verify the path of the current project (the "Song folder"). The Information Panel's "OGG File" line near the bottom confirms the name of the audio file in the project folder that is being used as the chart audio.