Losing Weight

I was recently diagnosed with hypo and started taking medication back in September. I just recently did a round of labs that looked good but I cannot for the life of me lose weight! I eat at a calorie deficit, don’t drink, don’t eat out, eat plant based for about 50% of my meals and weight lift (3x a week) and walk every day. I don’t know what else I should be doing to lose weight at this point. Is there something I’m missing?