I already wrote up the manuscript, I need help with proofreading and editing the

I already wrote up the manuscript, I need help with proofreading and editing the paper to fit the NEJM guideline , Also need a separate presubmission inquiry which includes an inquiry to the editor
and Summary of the paper : Inquiry for the Editor (Limit 250 words)
Summary of the Paper (Limit 250 words)
here is the guideline for submission: https://www.nejm.org/author-center/article-types
It should go under case report
Clinical Cases Brief Report
Describes one to three (1–3) patients or a single family.
See Example
Maximum words: 2,000
Elements:
Summary (100 words maximum)
Maximum of three (3) tables and figures
Up to 25 references
When sending either new manuscripts or presubmission inquiries to the New England Journal of Medicine (NEJM), authors must classify their submissions as one of the article types described below.
Note, however, that these guidelines are intended for initial submissions to NEJM; if a paper is selected for revision and potential acceptance for publication, NEJM will likely request updated materials that adhere to much stricter guidelines for print and online publications.
Most article types are subject to peer review, and certain article types — such as reviews and editorials — are usually solicited by NEJM editors, though unsolicited submissions may be considered.
Authorship
All individuals meeting International Committee of Medical Journal Editors (ICMJE) criteria for article authorship
must be named as article authors. There are no limits to the number of
authors that can be submitted with manuscripts except for Letters to the Editor (maximum of three authors), Clinical Problem Solving (maximum
of five authors), and Images in Clinical Medicine (maximum of two authors).
Word-Count Limits
Manuscript word-count limits cited below include all information from introduction through conclusion or discussion. They exclude: abstracts, figure legends, and table notes. Manuscripts far exceeding word-count limits will be returned unread.