Submit CT600 for a company that owns two buy2let properties

I will need to submit a CT600 for a limited company that owns one buy2let property and bought another one. Accounts will be prepared for the period 01 Apr 2020 to 31 Mar 2021 and submitted to Companies House. I do not have the facility to iXBRL and cannot use HMRC to submit online as income from property is over £5,200.
Micro accounts will show only about twoto four entries for both balance sheet and income statement.
Any questions welcome!