Have you started to train yourself as a lead / manager? A couple of resources I've found useful in the switch have been Manager Tools [0] (book, site, and podcast) as well as The Manager's Path [1].
While his shtick can be a bit thick at times, I enjoyed Extreme Ownership by Willink [2], if only because it codified a lot of thoughts I've had for a long time. I've worked with a lot of military and defence so the stories and life views he teaches through didn't throw me, but I know it does for some people so YMMV.
I have found that the Manager's Tools suggestion that the single best thing you can do is have weekly one-on-ones with your team to be true. It can be tough, especially if you still have a lot of your IC responsibilities alongside your new team lead roles, but it is truly remarkable how much more insight you can get into what your team is thinking from holding these sessions. This is they crystal ball you are looking for. And remember, the weeklies are about your team members, not about you (refer to manager tools).
[0] https://www.manager-tools.com/products/effective-manager-boo...
[1] https://www.amazon.ca/Managers-Path-Leaders-Navigating-Growt...
[2] https://www.amazon.ca/Extreme-Ownership-U-S-Navy-SEALs/dp/12...