Background and objectives  The Diabetes Intervention involving person-centred Nutritional Education (DINE trial), is an ongoing project aiming to evaluate the impact of a novel and relatively unexplored person-centred dietary approach, of a sustainable Nordic diet, to people with Type 1 diabetes. Participants' perceptions and experiences of person-centred, nutritional education and the effectiveness of individual health plans will be explored. The research questions aim to bridge the gap between dietary practices and chronic disease management, offering insights into the most effective strategies for enhancing patient adherence.  Method  This qualitative follow-up study is part of the DINE trial, conducted at a community hospital in Sweden. After completing the intervention, participants (N=27) from the intervention group will be invited for a semi-structured interview.   Focus areas  Patients’ experiences and perceptions of:    Creation of a partnership by participating in the pre-assessment meeting and sharing their narrative.  Creating and using health plans as part of shared goals and decision-making.   The perceived effectiveness of health plans.  Receiving dietary information and advice based on the Nordic diet, including environmental sustainability.  Person-centred nutritional education - exploring perceptions of the intervention and in relation to diabetes care guidelines.  Interview data will be analysed using thematic analysis, supported by the University of Gothenburg’s Centre for Person-centred Care model for person-centred care to identify relevant themes and patterns in relation to person-centred approaches.   Results  Interviews are planned to commence in December 2025 and continue until June 2027.  Conclusion  The DINE trial and the follow-up qualitative study aim to focus on person-centred care, emphasising patient’s own resources to enhance self-efficacy and improve dietary advice effectiveness. If successful, this program could serve as a model for other healthcare providers, highlighting patient empowerment and self-efficacy.