Don't Install watchOS 6.2 if You're Worried about Problems
There is a very good chance that watchOS 6.2 updates will bring problems to users that jump in on day one. Even with an extended beta period and testing, there are usually things that slip through the cracks or only appear when millions of users install the update.
This could be slower performance, battery life issues or even apps not working right. Here's a look at the watchOS 6 problems that users ran into already. You may see some of these if you install it on day one.
If you're worried about this, hold off for a day or two, to see what other users experience.