Im 26 y o guy, 183cm and weigh 115 kg. I started running+brisk walking workout for 50min x 6 days a week. now already 2 weeks doing it. And also weightlifting/pumping/push up for 15 mins 3 to 4 times a week.

Breakfast: two slice of bread+ tuna and tea.
Lunch: a small portion of rice (1/2 cup) for lunch with some meat (chicken, fish etc) +vege
Dinner: Chicken/fish + salad/other vege

Am i doing it right? My target is achieving around 90kg in 3months. Any advice from u guys? thanks.

Thanks for the help. Can i still eat rice? I mean its it ok to eat just a quarter plate of rice at lunch only?