Crappie I tried looking also on the internet but found very little.
Short of taking your pup to a vet and having the nail removed it seems what you are doing is recommended by dog owners.
I did see one suggestion where nail hardener was used by applying several applications. Then bandage the Pawl by placing a sock or two highly up on the dogs leg securing by wrapping the sock(s) with wraps of painters or masking tape. Do not apply the tape to the leg itself but wrapping (many) wraps from just above the Pawl toward the upper leg. Forming a cast of tape.
Otherwise nail removal by a Vet will be needed which will allow the nail to grow back out.
Then the vet will create a cast from masking tape and gauze.
Make sure the area is clean using a mild disenfectant which can be something used for a child or even a solution of salt water.
I use "Blue Kote" which can be purchased at most Agway or Tractor Supply stores.
Blute Kote does what it says so becareful where you use the stuff.
Good luck and keep us updated.