Retirement tax questions

Hi Thomas, I had excess contribution in 2021 and already got that amount from my plan provider

 

if I am going to add that amount as suggested method ( "Less Common Income", "Miscellaneous Income", ""2021 Excess 401K Deferrals""  etc. )

 

my employer didn't provide corrected w2,  can I deduct that amount that I am going to report as miscellaneous from box 12 of w2?    since if I don't deduct i pay double tax? am I right? should I adjust box 12? but keep box 1 the same