You can start with iron rich food during the day, likewise raisin water in the morning, fruits and seasonal vegetable during the day. Add vegetable juice in the evening, that will help you to boost up your metabolism rate. You can also start with mild walk.
Next Steps
You can get your body constitution ( vaat/pit/kapha) check and go accordingly, as excess heat level leads to medical issues
Health Tips
Start the healthy diet as per your requirement, that will help you to sustain the level of iron and feel healthy