Plan several months. The corporate formation, the registry evidence and the recruitment the role depends on all run on other people's schedules rather than on yours.
Work backwards from the packing season
Published adjudication times matter least here. Forming and funding the U.S. subsidiary, issuing shares, opening banking and signing a lease depends on registries, banks and landlords, and each of those has its own queue. Obtaining registry extracts and reconstructing a share register that has not been maintained can take a lawyer several weeks. Recruiting the first operational staff, or at least reaching signed offers, takes a full hiring cycle. Only when those are in place can an honest petition be drafted. Work backwards from the season the U.S. operation is meant to serve, allow for a request for further evidence, and put the twelve-month extension review in the calendar on the day the first petition is filed rather than eleven months later.
Hypothetical example: a cold-chain packaging producer wants its Canadian executive in place before a new U.S. line begins production. The first review should identify dependencies that no immigration filing can accelerate: acquisition closing, corporate records, premises, staffing, and the executive's current payroll evidence. The closing documents and dated hiring commitments settle whether the proposed U.S. role exists when the petition is filed. Work backward from the operational launch, leaving time for questions or requests for evidence and for a new-office extension review if applicable. The common error is filing while the company is still negotiating the transaction that is supposed to establish the relationship. When the facts change after filing, the company may need a new strategy rather than a letter attempting to explain away an unfinished structure.