Companies file before the placement agreement is fixed, then receive a request for evidence about third-party control that adds months. Settle the supervision structure first, file a complete petition with premium processing, and let the engineer support the dealer remotely until approval.
Fix the placement terms before the clock starts
Build the calendar backward from the dealer's release date but forward from the document that most often causes delay: the services agreement. A petition filed with an agreement that has the dealer supervising her will draw a request for evidence, and a rewritten agreement submitted at that stage looks like an afterthought. Negotiate the control terms first, which may take longer than the petition itself.
Then collect authorship evidence, payroll records and corporate documents; these are quick if the company's document control is in order. Premium processing shortens the USCIS decision to a defined window for an additional fee, and a Canadian citizen can present the approval at a port of entry without a consular appointment. Until then, she can support the integration from Guelph/Eramosa by remote access, which requires no US work authorization, and attend planning meetings as a business visitor without performing productive work on site.
Remember that any extension of the year must also stay within the five-year L-1B maximum.