You need to consult with an experienced immigration attorney.
NYC EXPERIENCED IMMIGRATION ATTORNEYS www.myattorneyusa.com; email: email@example.com; Phone: (866) 456-8654; Fax: 212-964-0440; Cell: 212-202-0325. The information contained in this answer is provided for informational purposes only, and should not be construed as legal advice on any subject matter.
You have to answer all questions truthfully. The 45 days requirement is not really a requirement but a suggestion from the best practice variety. You can file any time prior to expiration of your H1B.
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Personally, I have noted a troubling recurrent pattern as follows: an overwhelming number of foreign nationals seeking H1B are placing a barrage of very complex questions attempting to complete that elaborate process groping around in the dark, when the very first thing they need to do is retain one competent immigration visa attorney to avoid mistakes, omissions, delays and denials.
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