Low thyroid?

[u/Fit_Art1866]

I have been seeing a MFM during my twin pregnancy who tends to be overly cautious. I am currently 23weeks with di-di twins.
My T4 measured as 0.82 and my T3 as 2.3
My MFM wants to put me on levothyroxine but I am hesitant because my numbers still seem to fall in range even if they are on the lower end, and I am worried about side effects on the babies. I have never had any thyroid issues before or any family history of them. Does anyone have similar experiences in their multiples pregnancy? Were you able to manage without additional medication? If you did choose to take medication, were there any adverse effects on your pregnancy or side effects once you stopped the medication post pregnancy?

Edit: My TSH was 0.981 at 20 weeks