What is an edible that would help my back pain and thus allow me to sleep all night?

Hello,
For most with similar goals as yours, I would recommend a "standard" indica edible, such as
https://sensiproducts.com/product/sensi-chew-100-indica-for-nighttime/
Or
a product with similar amounts of THC and CBD, such as
https://sensiproducts.com/product/sensi-chew-cbd-gold-11-more-pain-relief/

Although products with higher THC content would be more effective, those wishing to avoid the psychoactive effects of THC should consider products, such as

1. https://www.cbd.org/products/cbd-chocolate/ 18:1
2. https://treatwellhealth.com/products/high-cbd-tinctures/ 20:1
3. https://truefarma.com/product/sweet-releaf-extra-strength-2oz/

drkim