Going to all cash is attempting to time the market. Don't do it. Imagine selling everything. OK, that's easy. When do you get back in? Can you mentally handle buying back everything at 10% higher than what you sold at. If you jumped out 4th quarter 2018 or 1st quarter 2020 and then bought back six months later, you would have missed out on a lot of upside. If you are really a novice, don't time the market. You will lose.
Sometimes, you have to push back on the panic - the history of the stock market is that the market always goes up over the long term.
I've done quite a bit of personal retirement analysis. I will probably do fine if the market does somewhere between okay and well during first two or three years of retirement. If the market takes a big downturn when I first retire (even if temporary), that can cause some long-term retirement problems. If I can make it past the first few years, I should be able to recover from a big shock that occurs somewhere down the line. One can make up a spreadsheet to calculate this out on your own very easily. Plug in a bunch of different annual rates of return for each year to see how you might do given different market outcomes.
What does this point to: Perhaps consider a "soft" retirement, such as working part time for a few years instead of jumping right into retirement.
I'd also consider ways to transform the investment mix from all growth to a mix of growth + income producing products. For example, investing in tech companies is a great thing to do for long term success. However, if you have to sell off 4 to 5% of your portfolio each year, then you are effectively eating your seed corn.
I've been putting more money into some REITs with high interest rates + QYLD. I'm also putting more money into great companies with strong dividends. NO to value traps like AT&T, but yes to AVGO, HD, etc. Bonds are almost universally all trash and will likely be poor investments for quite a long time. This isn't comprehensive, just a few things that can easily be done within your investment account. Google the concept of barbell investing.
I'm interested to learn how much you are paying for investment advice and whether they've improved your returns enough to justify the expense. I pay for a few subscriptions - IBD and Motley Fool, but that's about it.