how to exclude our custom application data from being picked by Account Analysis Report?

Recently We has implemented a custom application. Data for this custom application flows through accounting hub. The data volume is huge (millions of data each day). When we try to run "Account Analysis Report" or "General Ledger and Subledger Account Analysis Report" it ends in error after query timeout (3 to 5 hours runtime).

Our need is to exclude this custom source data for this report by customizing it.
We checked data model of this report , seems all data is loaded by before report trigger to this table (xla_report_balances_gt) by package XLA_ACCT_ANALYSIS_RPT_PKG.beforeReport(:FUSIONAPPS_REQUEST_ID).