using wacom with google slides

Im an educator trying to teach chemical equations I want to use my live sessions while im using google classroom and having to use google slides to annotate my slides live using a wacom tablet I bought specifically to do this.

After trawling the internet it seems this is not possible and I will have to use jamboard and write from scratch while live not what I want

Anyone found a plug in or add on for this has google moved on to allowing – wish we did n’t have to use google but its what my school are using