I believe that there are many ways to help each unique child learn to read.
My 3rd grader had a very unique path to learning to read from preschool onward. Study your son and see what works for him. We have used some phonics, some Orton Gillingham programs, some CM and some whole word programs.
Once he could handle cvc words like cat well, he did better with CM. We used A Gentle Feast Sight and Sound reading at that point. After both levels, we moved to CM lessons with Christian Light readers. We did CM spelling alongside and still do. The stories in both A Gentle Feast and Christian Light being older English than today, cause my son to not guess so much. He also doesn’t know the typical old children’s rhymes and stories they use, so that helps.
I cover parts of the whole word as he works on each part from the beginning. He’s doing well and using logic to figure out Spelling. We also use The Secret Stories which is helping.
Christian Light Learn to Read was somewhat helpful, but not by itself and not all the tips. It became too much to remember, so we went back to CM.
I hope this helps. If you want to try OG, All About Reading is recommended by many.