Uncertainty at work - not sure what to do.

Our organisation is going through a major change, and my manager said that they'll be moving to someone else and all of our team (their reporters) will be temporarily moved under another leader. 2 weeks in, a couple of folks' reporting changed on workday, but no communication from the new manager. I even tried reaching out but no response. I asked my previous manager and they said "please wait, they will reach out to you". It's been 2 weeks since this change and I have gotten no communication. I have followed up. Ours is a role where we don't have to give a lot of updates to our manager but I'm honestly scared. Should I chill and enjoy my manager-free life till they reach out or are my apprehensions correct? Help me out pleasem