Can I lose 15 kgs in 7-8 months like this?
Yes definitely. Your diet doesn't include fried items, you have included all necessary nutrients which is required. Plus you have also planned out well your workout of running and yoga. It is said that for weight loss, your focus should be 75% on food and 25% on your workout. Also, if we consume, say 300 calories a day, our target should be to burn 400 calories in order to loose weight. Your routine includes all of the above.
PS: please allow yourself one cheat day (or meal if possible) once a week. :)