Its really hard. One time when i was traning legs on a hot summer day. I got a feeling of vomit because of the heavy weight lifting and the hot environment.https://forum.bodybuilding.com/showthread.php?t=159678631
Try this plan but with between 12-15 reps if you are trying to lose weight. And you should be doing very strict reps and failing between reps 12 and 15.
As for people who say training legs 3 times per week is over training I say utter boll***. Legs are designed for walking hundreds of miles per week, up and down mountains, week in week out if need be and capable of rapid recovery. Once you get up and going you'll be able to train legs that often - with cardio in between as well. Until you do you will not get them to grow. It is hard. Every wonder why a lot of guys in the gym are wearing track suit bottoms all the time and not shorts? Because leg training is hard and people would rather do something else. But get leg training and weight will drop off you.
What about taking supplements (Whey) two times per day