Hashimotos TTC

I’m planning to ttc next month. I got off my birth control and had a physical to make sure everything was good. I have previous history of gestational diabetes (6years who) so I like to get my sugar tested often and I had been having trouble losing weight regardless of my eating and exercise. The doctor tested my thyroid and diagnosed me with Hashimotos/ hypothyroid He said it’s not super high so he’s not too worried but because I’m ttc he wants to keep a closer eye on it. Is this something anyone else is dealing with? Any tips for getting it under control? I’d rather not add meds if I don’t have to because I was able to get off all other meds for this pregnancy, but if I need them to keep my levels in check I will