Dear Pradhish, if you are using Tally then you can also reconcile through it... for this simply download 2A Jason and load in Tally... for further assistance on how to load in Tally you can refer Tally official website !!
You can reconcile with GSTR-2A or GSTR-2B it does not make much difference. Only thing you need to remember is the 100% value which you are taking to claim the 5% provisional ITC is available in GSTR-2B