I wish to lose belly fat

Hey all, I'm a 23-year-old from India. I started going to the gym, but then I got dengue and had to take a break midway. Due to work pressure, I couldn't find time to hit the gym, and after sitting in front of my laptop for long hours, I have put on weight!

Right now, I have started fast walking (not brisk walking) and have given up all junk and packaged food. I’m also slowly cutting down on sugar—no ice cream or chocolates, only black coffee without sugar.

Hitting the gym daily is tough for me because of work commitments, so for the past week, I have been going for a walk around my community every day after work (one round is about 7 km). After completing a month of this routine, I plan to start alternating between running and walking while maintaining my diet.

Does this sound good? Looking forward to your suggestions!