1) best option is to dissolve existing firm
2)
According to section 43 of the Indian Partnership Act, 1932:
1. “Where the partnership is at will the firm may be dissolved by any partner
giving notice to all the other partners of his intention to dissolve the firm.”
2. “The firm is dissolved as form the date mentioned in the notice as the date of
dissolution or, if no date is so mentioned, as from the date of communication of the notice
3) then form new partnership firm and submit deed of partnership to bank for opening current account