Thanks for writing to DoctorSpring.com with your health concern.
Actually, before planning a conception, TSH ideally should be less than 3.0.
There is no natural way to treat this.
If you are planning to conceive, please start Tab. Thyronorm / Eltroxin 25 micrograms once daily.
Repeat TSH after 6 weeks.
If it normalizes, you can plan a pregnancy.
All the best
Please feel free to discuss further.