Yes you can!!!
I had submitted bank account statements from 3 accounts!!
Get 2 letters (stamped and signed by the bank official), one from each bank with the same 'FROM date' and 'TO date', stating that
1. Account A holds always 2000+ GBP (or INR equivalent) since 'From date' to 'To date'.
2. Account B hold always 800+ GBP (or INR equivalent) since 'From
date' to 'To date'.
You can also attach the bank statements (stamped and signed).

Be very careful about the dates

, In your case you need to get the statements with coinciding dates only otherwise the caseworker would interpret that you either held only 2000 or 800 GBP for the 'non interlapping' period of the two bank statements.
Best of luck!