As an ETF Boglehead style investor is now a good time to diversify 15-30% into blue chip stocks experiencing decline?

I’m in my early 20’s with no debt and a sizable emergency fund, so my risk tolerance has some room to work with.

For the last two years I’ve been in the Boglehead 3 fund as follows, SCHB(59.6%), SCHF(39.4%), SCHO(1.0%.)

However I was thinking about purchasing some AMZN, APPL, WMT, GOOG, NVDA. Maybe 33% of the US equity portion of my portfolio, in other words 19.8% of my total portfolio.

Has anyone thought about doing this or have any advice for why I maybe should stay the course?