cut your portions and start moving more!!! walk, bike, or dance. Do something you enjoy - something fun! and lean more towards 100%. Throw out the crap oils, sugar and all grains.
Now - if I could only take my own advice........... I too am 183 pounds - 5'3" (whatever that is in cm?) and I'm getting within spitting distance of my 53rd birthday. UGH!
Good luck - and have fun in Italy!!!!