Grounded 2 early access - jump in now or wait?

if you do jump in, play it with friends if you can. solo works, but the bosses and base building feel balanced around a group, and early access bugs are a lot easier to laugh off with someone else there.

Depends how much patience you have for early access. What's there plays well, and if you liked the first game you'll know the loop straight away. But there's a lot less content than the full release will have, and balance can change between updates. The first Grounded did early access the same way and got a lot better before 1.0. If you've got Game Pass, try it now since it costs you nothing. If you'd be paying full price, I'd wait a few patches.