What is the benefit to consolidating investment funds that overlap?

Early on in my investing, I started mutual funds but now I prefer ETFs. I also wasnt sure between VOO vs VTI so I ended up investing in both. Now I have a mix of VFIAX, VTI, VTSAX.

Now my overall plan is VTI + VXUS based on the advice that Ive seen here and resonates with my goals. Is it okay to just start investing into these funds or would it be better to sell my other funds too?

This is for an individual brokerage account so there would be tax implications.

Appreciate any help!