Re-initialize Senty from <script> version from CDN to React one

We have Some issues with starting React app for some clients with old browsers which we, unfortunately, must support.
Since it falls on startup Sentry is not yet initialized, and we not get what exactly happens on their side.

So I thought about running Setry before from CDN and after that re-init it in React app
Is it possible? Should I do some shutdown method before run init again?