What else I can do ?

Actually there are still things about push up and sit up, but let's move to another stuff related with your quick slim program.
You've already reduced your food intake gradually.
You've already skip your bed time meal.
You have milk for your stamina ( no matter full cream or no fat one ).
You do some sport as your ritual.
What else ?
The tricks and tips about slimming program will not reaching an end, you'll find a lot of interesting thing around this topic, may be from the net, from your friend's talk, or the best one is from your own experience ( which you can share with us anytime ).
Easy doesn't mean doing it halfhearted, quick doesn't mean instantly or immediately shape up.
Reaching a good result in a year or so is quick for some one with extremely overweight body, six months to reach the goal is quick for you with moderately overweight body.
Besides we need quick but above all, we need "save" ( or healthy ).
I will share cases about peope who ruin their health only because inappropriate diet program.