Wrong gstr - 3b filled and worried for interest

GSTR - 3B -- Month : Aug

Due to oversight we have uploaded Double Amount of Availed Input Tax Credit in GSTR -3B for Aug..

Now its reflected in Electronic Input Tax Credit Register as Double 

Question - 1) After Submission of GSTR -2 for Aug then it will be corrected in Electronic ITC Register ?

                 2) If no, then how to modified ?

                 3)  *** IMPORTANT QUESTION *** -- Can GST will Charge  24% Interest for  Excess Credit Taken at GSTR -3B ???

                      Note: GSTR -3B is provisional Return and We will submit Correct GSTR -2 for Aug 

Please give me suggestion for above points ... thanks ... best regards