Tally Prime GST Reconciliation Support and microsoft excel

I need an experienced Tally Prime professional to take charge of our GST work. The immediate focus is accurate GST calculations inside Tally and then a full reconciliation of those figures with the data already uploaded to the GST portal.

Here is what I expect:
• Scan the existing ledgers, tax masters and voucher classifications in my current Tally Prime company, spot any configuration issues and fix them so that every taxable transaction is picked up correctly.
• Generate the GSTR-1, GSTR-3B and GSTR-2A reports, match each line item with the portal records, highlight mismatches and pass the necessary adjustment entries.
• Deliver a clean reconciliation statement for the latest tax period along with a short note on preventive steps I can follow to keep everything aligned going forward.

You’ll be working directly on a live data set, so please be comfortable with remote access tools and data backup practices. Accuracy is more important than speed, but I do want the job wrapped up within a week of project start. If this initial assignment goes well, there might be additional bookkeeping tasks later (data entry and payroll are managed in-house for now, but we’re open to handing them over in the future).

Let me know your approach, the checkpoints you typically follow while reconciling GST in Tally Prime, and the turnaround time you can commit to.