There is a wealth of material of how to do the inner child work and also Shadow work - books, websites, youtube channels..Just google it and you'll find something that would suit your needs.

I found that it's much easier (and healthier, frankly) to work with those raw young feelings outside of therapy. As I said, there is plenty of guidance on how to do that you can find online. I've done more work and better quality work of this kind on my own, without a therapist.