You may want to go easy on the Port though.
I’ve been following mostly a carb-free diet for 5 weeks and have lost about 15 lbs. I’ve had wine and dessert a few times during that period. I don’t know if I can maintain ketosis for that long. To start a weight-loss program, 2-3 weeks is good. Then feel free to have wine or pasta every 7 days. It’s worked for me.