Hello.. Looking at your age and obesity u are likely benefit from wt loss and subsequent decrease in blood sugar and even reversal After few day of lifestyle modifications u could bring your Fasting and pp down is good thing.. But still your fasting sugar is above target at present moreover u get yourself tested with Hb1Ac which will give u exact idea of your sugar control in last 6 to 8 weeks... If u could keep your Fasting below 130, pp below 180 and Hb1Ac below 6.5 then their is no need of starting medication but u have to regularly monitor sugars...!!