Ontario Standard lease is required by the government. The tenant can stop paying rent until they have the standard lease signed. The landlord must provide Within 21 days tenant's request.
Unless you really need move back in to the unit, with given N12, and paid 1 month rent to tenant, if the tenant wants to renew, the landlord can't refuse
2023 Ontario rent caps 2.5%
Yes, full year rent is allowed, you could put first 11 month and last month on the agreement.