Most likely not a popular opinion in this forum, but just ignore if you don't like the advice.
I have been very aggressive in my portfolio. 93% stocks 7% cash. But, the market has been going up for over 10%, I got a 12% during that time period, but it can't go up forever. Because of this I have changed my allocation to 80% stocks 20% cash.
I would recommend something similar.
It's a small hedge against a drop, but if the market does fall, and you reinvest the cash when it does, you can speed ball yourself to retirement.
If it doesn't fall, and continues to rise. MM are almost returning 3%, and climbing, so you wouldn't lose much.