what forms should i use for rental property held by an LLC with its own EIN
In order to qualify for QBI:
Separate books and records showing the income and expenses of the rental real estate
250 or more hours of services performed for the rental per year by owners, employees, agents or independent contractors. For rental activities in existence for more than four years, the 250-hour requirement must be satisfied in three of the five years ending with the the tax year.