Since you are on insulin
and also medications for blood pressure and deranged lipids
it is very important for you to control your regular meals and lifestyle accordingly... Drinking lots of water may not be the solution to your problem but having a meal and routine regimen which can cool you down from inside and helps in regulation and well utilization of your body lipids, fats and protiens. Taking fruits like apple once a day and watermelon (3-4 small pieces) a day in the afternoon would play a role.. Then taking a bowl of milk with sheet flakes or an egg with sheet bread instead of heavy breakfast will also be helpful.. Taking five small meals like these in the whole day divided in a specific pattern would not only curb this problem but also help in controlling your blood sugars, lipids and blood pressures... Then having a 15-18 min walk after every major meal instead of a heavy exercise would also be great..
You are welcome for any further queries and answers