What do I need to prepare for re-entering Thailand on a DTV visa after a six-month absence?

Hi i would like to ask . I’m dtv visa holder . This will be my second time entering Thailand after have been fully six months living in the country , now i have leaving thailand dir almost six months and would like to come back again , s there’s a new rules ? Do i beed to have fully prepared for all tge document and kind something i have to prove my bank statement ? Is there a paper from the school do i need to bring it along ? Thanks in advance