@Maeve_Digital It’s totally normal to be a little nervous about that. VOO is great, but it’s definitely "top-heavy" with big tech, which is usually the first to pull back when interest rates are high or people get jumpy.
Consider adding mid-cap value stocks or international stocks, such as an EAFE fund, to reduce risk. This spreads things out, so you aren't relying entirely on Silicon Valley. Maybe just ease into it slowly rather than swapping everything overnight.