Hey Bren, I think the problem may not be so much a physical addiction but rather a psychological/emotional conditioning. You feel stressed or sad and seek to still that pain by eating sweet food. If you can learn to accept and be with the stress without the need to get rid of it, you can weaken the conditioning between stress and food. It’s not easy and it takes time, but if you bring kindness towards yourself every time this happens, you can do it.
All the best.