*Regarding GST Update*
Namaste
*First priority option* As already explained that so many interactions are required with GSTN in timebound manner that only feasible option is to do it yourself and file online returns through software using Karvy or GSTSure. You can visit asp.swindia.com orgst.swindia.com and do the same. All the options are available inside software GST menu.
*Second priority option* Still if you want to transfer excel raw data to CA and he wants to prepare report for you, you can use GST data summary option and export raw data to excel and provide this sheet to your tax consultant. This is part of standard features in GST updates. All GST features will run after 30th Sep 2017 only if either you have paid GST update charges or Advance AMC for one year.
*Third priority option* Govt has provided offline tool for R1 upload and if you want to see R1/R2 details from software or get excel sheet for upload to GSTN, we may provide same for Rs 2000 per annum. Still we do not recommend this option as we are not tax experts and cannot guarantee for accuracy or sufficiency of R1/R2 generated by our software.
Hope it helps.