How to lose weight after childbirth?

Specially after breastfeeding you should start diet.I lost 20kg after childbirth with the help of yoga,roti,green tea..i absolutely for that what is sweets..didn't even see for 10months.. Have lots of fruits after 30 min of breakfast. 2 roti in the morning with some vegetables,lunch 1roti with some boil vegetables and fish or egg white (its optional) no potato. In the evening evening green tea n 2 biscuits. Dinner around 8:30 2roti n vegetable curry. You can have dalia and oats.