Splitting my grow tent into two rooms! r

Alo anyone got any good efficent idea's on how to split my tent up into two rooms one for veg and one for flower with out getting light leeks ? the tents 2,4m 2,4m 2m high .Thanks

You could try puttin cardboard up n juss mylar over it?

its a pretty big space to do it with cardboard bro the big issue is sealing it , im trying to avoid buying another tent but i dont see any other way around it