I opened a partnership - me and wife - (unincorporated business) in 2018 and now i received Tax return and appendix BIR60.

I have read for partnerships do not have to fill Section 4 and 5 in tax return, neither BIR60.
Which forms need to be submitted for partnership?

Besides, can easily change from partnership to sole proprietorship? Looks like is more convenient for me as actually i am the only one running the business.