I need cheats for lego star wars on ps3 my autistic son is going crazy as he is so stuck i cant help?

Has anyone got a cheat for more coins or lives on lego star wars on ps 3 im desperate please help my searches bring up nothing to make it easier for him

that game is simple and boreing ign.com gamewinners.com gamespot.com

lego star wars the complete saga cheats DS and PS3