1. Anchor your portfolio with high-quality bonds. Investors are often tempted to time market as market dynamics change.
2. Explore non-core income options.
3. Use short-term bonds to help lessen interest rate sensitivity.
4. It is always necessary to add municipal bonds to your portfolio.
Lol! Bonds are crap! Unless and until you can trade your bonds in the secondary market, it makes no sense at all. In many countries, it is not possible.
If you are really looking forward to diversify your portfolio, move to global equity and precious metals. I assume you are already a crypto investor so wouldn't specifically mention about it.
But I reconfirm - bonds are crap!