You can massage Hegu, Shousanli and Xue Hai to lose weight. But I think it's better to add more acupoints. Because from the point of view of traditional Chinese medicine, obesity is caused by deficiency of both spleen and kidney. You can also massage Taibai, Gongsun, Taixi and Yongquan points to achieve the effect of strengthening the spleen and tonifying the kidney.
If you are not familiar with acupoints, you can also use the method of dietotherapy to recommend a dietotherapy recipe for you to eat "yam and barley porridge", which can strengthen the spleen and kidney, dispel dampness and replenish qi, enrich blood and lose weight very well. This dietotherapy comes from the book "Seeking medical treatment is better than seeking yourself".
I wish you a speedy recovery!