The devs are delaying projects what do I do?

Just recently became a project manager. And since starting I’ve literally taken on more role as a developer than an actual project manager.

The issue here is that, the devs do not give me answers in a timely manner. I’ve had a couple projects even not touched for a week after asking for progress and if it could be delegated if workloads are high.

I get it right, not my job and in a perfect world it shouldn’t affect me. But it does idc what the company says I’m the one managing the project I’m the one on the calls I’m the face. So how many times can i tell a client “our devs have not finished the templates we will have to push back on a promised date”?

Idk this is just difficult. Do I just take the heat that can come with it, not touch the work and let things delay or just basically burn myself out and figure and build things out that the devs should be doing?