T2042 For Partnership. Do I need to complete it 2 times?

You can also open the schedule in forms and under the "edit" function - "Forms", "copy/transfer form" and create the second schedule. Returns must be jointly prepared and co-ownership details provided.

You should create only one T2042 "Statement of Farming Activities", indicate your share of the business and then in the Co-owners details indicate the share of spouse if applicable. This will then create the two required schedules and claim the proportionate share of the net on each tax return.