I am also at the same point... retire in 2 months..
My 1st suggestion is to go to forums like FIRE retirement or Bogleheads... and do some research.
Do you have a pension also? Or are you relying on SS and your 401K moneys?
A lot depends on WHERE your 401K is invested... If its in just a companies stocks then it can be riskier.
The more diversified, the safer, and funds with lower fees means more money for you.
Personally (I also will have a pension) I am planning on taking about 1/2 my 401K out and move it to an IRA. Gives me a wider choice of investments. We also started Roth accounts for us both.. (were younger) and intend of converting out our contributions to stay in our lowest tax bracket.
The old saying ..... dont put all your eggs in one basket.... works here well...