Migrate a very large and complex Excel sheet to PowerBI

Hi there! I am looking for a Freelancer to help me migrate a very complex Excel workbook (~220MB, 10 or so sheets) to PowerBI. Specifically, the data is comprised of detailed formulas that will need to be updated regularly. I am looking for help just with the data migration, without any required visual changes - I want the same data to be successfully transferred over to PowerBI. This is a large and complex Excel sheet, so the right candidate should have experience with dealing with a substantial amount of data. If this sounds like a project you can handle, I look forward to hearing from you!
Please advise on your committed timeframe too.