My wife slightly snoring while I feed the baby.

Radian on Amazon, they work like two-part epoxy. You can also make custom fit earbud covers to have noise cancelling earbuds that are super comfortable. If you get the Radian kit, put a water bottle cap sized spacer between your teeth while they cure. They will seal better.

https://www.radians.com/products/composite-radians-custom-molded-earplugs-and-accessories?hsLang=en#features