Weight loss for a short person

I have a question: I’m currently on 7.5mg dose, I have another 4 weeks to go on that, but I’ve been on MJ now for 3 months, I’ve only lost 2.3kgs since I’ve started and I’m quite short, so it is difficult for me. Are there any tips, besides weight lifting, walking and eating? I am weightlifting 3x weekly, I walk everyday with a weighted vest and I eat around 1400kcals a day. Sometimes a little over. What do I do, my scale barely moves…I’m just wondering if MJ is working at all for me…thank you for the help all ❤️