it’s quite practical to loose 25 pounds in 3 months. the first thing i would suggest you do is invest some money into getting body fat calipers, what they do is measure the percentage of body fat that makes up your total weight. once you know the amount (in pounds) subtract that from your total weight this gives a rough average of how much lean muscle mass you have. It is a known fact that each pound of muscle burns about 13 calories daily (without you having to do anything) so if you multiply your lean muscle mass by 13 it gives you the amount of calories you have to eat to maintain your current weight. the rest is simple you want to cut your calorie intake by a safe amount (i would suggest by 500). With this diet alone you would be losing about a pound a week add in exercise and you could lose from 2 to 3 pounds a week which gurantee the results you are looking for.

don’t eat any junk food! ( you will live!) Take long walks everyday don’t overdo your dinner. Eat healthy food. If you get hungry drink water till your stomach is full.

hope i helped

Do lots of exercise, and not just walking or jogging. to effectively use all muscles is the best way to lose weight to stop overuse injuries. try cycling, swimming, other sports. Try not to treat yourself too much over the next three months, but dont give up fatty foods either, life is about balance.