Hello everyone; I am creating a chatbot that converts my text to JSON format, and it decides the fields/categories on its own. For the example below, it will convert the medical description to JSON

Example:
Patient John. Allergies to shellfish. 6 Feet, Previous Checkup. Chronic Backpain. Migraines Regular. Cane user. Sport Injury. 35 years. Visit 1 year go. Heavy Smoker previously. Fatigued. BMI above normal. Temp normal. On Ibuporofen. Skin rash, using topical cream.

Which lightweight model will be the best for this task?