Hi
I think you known about the problem for you . One more think you having only 3 meals , can you make it as 5 meals which comes healthy snacks in btw like mid morning around 11-11:30am & evening around 5-5:30pm. Choose healthy drink instead of soft drinks. Some of healthy options for u : Lemon juice, any veg juices, lemon soda, buttermilk or masala buttermilk, green tea. Night snacking is not a bad habit but what going to have is more important so choose snacks like fruits( sweet lime, apple, guava, pear, papaya, green apple, grapefruit, watermelon, musk melon), Veg salad with lemon juice+pepper+black salt, sprouts with veggies, any liquids porridges like oats, dalia ( broken wheat), cornflakes with skimmed milk, poha with skimmed milk, puffed rice with veggies. Can you increase ur activity level daily. If you not able to loss ur weight , simple thing change ur diet patten & exercise patten.
All the best.