Tax Method Correction Form 1065 LLC

My first year filing Form 1065 with TurboTax I selected the  Accrual method for my accounting designation.  This was a mistake.  I met to select the Cash method.  I am now filing my second year and noticed the error. Can I make the change this year in TurboTax without issue? AND since my method didn't actively change, meaning it was just an error with the selection, do I have to file a Form 3115 with the IRS?