This presentation reports on a participatory action research that aimed to develop a woman-centred intervention to improve exclusive breastfeeding rates at hospital discharge among women with GDM. It highlights the achievements and challenges of practice-development strategies that were developed during the study. The main strategy was focused on providing online resources including a website and mHealth app called the Milky Way Breastfeeding. In conclusion, to tailor education and support for women with GDM, there is a need for multilayered practice changes where use of online resources can be embedded in routine practice and care