There's a benefit of reconciling your accounts every month, but you can still choose the current month, vnguyen1.
Reconciliation lets you check the difference between two financial records or balances. In QuickBooks, you'll have the option to choose the transactions that you want to reconcile for the current month. I've attached screenshots for your visual guide.
You can put a checkmark if you only want to reconcile for the current month. Also, the balances in QuickBooks Online (QBO) have to match your bank and credit card records to have accurate financial data.