Go by gut feeling , it feels like the blood sugar should be the first thing to target. I wouldnt worry as long as you are losing weight .....about metformin or something. But if you have a stall dont hesitate. but remember a stall is no weightloss for 2 months with all the effort.

Check your blood sugar everyday in the morning which wil be a good start since if ther are hapazard blood glucose reading it will show up eventually on morning blood glucose. Ofcourse you can do glucose tolerance test to find how insuline resistent you are.

If you can maintain one thing steady like blood glucose then you can play with the others. Atleast that is my strategy.