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@Randy Haynes wrote:

The only problem with not including the 1099-NEC and just adding that income on the Schedule C is that you now risk getting a letter from the IRS asking you to explain the lack of it based on their document matching. Your total income may be correct, but they do not know that.

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I have never once, in over 25 years, filled out a 1099MISC worksheet for Sch C income.  I always put the total business income on Line 1 of the Sch C.  As long as your total income equals or exceeds what's been reported to IRS in 1099s, no IRS letter would be generated.