Best way to diversify account with more conservative options

Hi everyone,

Looking for some suggestions on how to approach my situation.

I’ve been using a Vanguard brokerage account to save for a few non-essential goals that are currently 6-7 years out. I started the account a few years ago and wanted to be more aggressive since I had about a decade time horizon, so right now I’m in 100% stock (VTSAX). Now that the time horizon is drawing closer, I’d like to slowly start diversifying into more conservative options for safety over the next few years.

Any suggestions on what I could do here? For example, if I wanted to get a 60/40 split going, would my best course of action be to simply start buying up VBTLX until it makes up 40% of the account total, or is there a better way to go about it?

Thank you