I lost 8 kg within a few months by cutting down how much I eat (no more junk food or even healthy snacks, just 3 meals a day) so you deffo should’ve seen a difference. Are you weighing yourself every week? There’s loads of apps to keep track. I then lost another 4 kg by using the treadmill regularly. I stopped over a month ago cos I got lazy but luckily haven’t gained any weight, I’m hoping to lose another 3 kg starting next month!