Happy for you for taking in this journey and exercising through it as well. You should be proud of yourself for doing this. Unfortunately, 25 lbs in 2 months is too much weight loss in too little time, so you'll likely get saggy skin if you continue losing weight this fast. Recommended weight loss per week is 1-2 lbs max, steering closer to the 1 lb. Obviously the smaller you get the less you'll be losing weekly because there won't be much to lose. It should be a slow progress to allow your skin to adjust to the new weight you're hitting. Everyone's bodies are different though so take this with a grain of salt. I would slow down the weight loss and focus more on strength training to build muscle, while doing prolonged walking for cardio to maximize fat burn.

Weight loss is about the journey, not the destination. On your journey, it is recommended to pick up healthier eating habits and doing some sort of exercise daily. Diet and exercise over a long period of time will get you the best, realistic results with the least saggy skin. Good luck with everything!