Vanguard now has a Outgoing transfer lock! On the website.
Wow! finally. We can press a button and lock outgoing money transfers. This is amazing! And yes you can choose which accounts to lock.
Thank you.
Edit: thanks everyone. Yeah I noticed it! And said I have to go to the bogleheads subreddit to let the VANGUARD DIEHARDS know.
Keep on BOGLE’ing.