Great advice from Elc112, I low carb too, at first you will find your insulin needs will taper right off.You may find over time if you decide to stick with it for the long haul that your insulin levels creep back up.I found this.
At first you seem to shock your body into becoming super insulin sensitive when you cut out a lot of your daily carbs.
Make sure you test a lot, certainly at first a couple of times between meals to see how your body is processing the protien and fat content of your diet, you will start to see patterns and can adjust your doses accordingly.
Make sure you have plenty of stuff in to treat Hypos in case the first week or so is rough until your body adapts, and BG levels out.
Try and get inventive with your cooking/eating if not already,and maybe at first have some meal plans you can work to that are healthy ,so you have worked these out first as to how much Bolus you will need for them, then expand your meal repertoire from there. You may find this easier in the get go.
Look in the low carb diet section on here,ang look online,there are some great recipes in around, just remember to try and buy the best quality meat you can afford,it does not have to be the expensive cuts if you do a good recipe with it. Also as much color fruits and veg wise as you can...get inventive with roasting and stir frying veg...with lovely marinades.
The weight will fly off, there is no better way to lose or maintain weight IMO. I hope it works for you
Good luck