When comparing tools, a mechanic cannot fix a car with a curling iron and a glue gun. A mechanic could try to glue on the fuel pump or the spark plugs, but they would not get very far. It is similar to a teacher not having the tools necessary to teach a child to read. A dyslexic child needs a highly specialized technique, called Orton-Gillingham, in order to read effectively. Without that technique, or tool, they will be ineffective, as the mechanic with the a curling iron.
It’s important that the intervention is evidence-based and Orton-Gillinghma has over 30 years over research and effectiveness. Ask your teacher about their training. See if there is the possibility that they can be trained, as this will be the most effective way for your child to have reading remediation.