Here are an assortment of references available that could be helpful:
Hebert, M., Kearns, D. M., Hayes, J. B., Bazis, P., & Cooper, S. (2018). Why children with dyslexia struggle with writing and how to help them. Language, Speech, and Hearing Services in Schools, 49(4), 843-863.
Dębska, A., Chyl, K., Dzięgiel, G., Kacprzak, A., Łuniewska, M., Plewko, J., ... & Jednoróg, K. (2019). Reading and spelling skills are differentially related to phonological processing: Behavioral and fMRI study. Developmental cognitive neuroscience, 39, 100683.
Galuschka, K., Görgen, R., Kalmar, J., Haberstroh, S., Schmalz, X., & Schulte-Körne, G. (2020). Effectiveness of spelling interventions for learners with dyslexia: A meta-analysis and systematic review. Educational Psychologist, 55(1), 1-20.
Tilanus, E. A., Segers, E., & Verhoeven, L. (2019). Predicting responsiveness to a sustained reading and spelling intervention in children with dyslexia. Dyslexia, 25(2), 190-206.