Go jogging in the gym, it's too hot indoors and it's easy to sweat. I suggest you go outdoors for exercise at night. The temperature has dropped, and running is still a little windy. Jogging is your first choice.
You can take a brisk walk in the gym to achieve a small amount of sweating and lose weight.
It is most important to exercise abdominal muscles. 15 20 in each group, sit-ups. Five or eight groups at a time. Because you can't sweat too much, you can only add more when you practice your abdominal muscles.
Losing weight means consuming calories in the body. You can't sweat too much. It may take about three months to lose weight.
Attention should also be paid to diet: don't eat greasy food, and don't eat supper at night. When you are hungry, eat some milk bread. Drink less beer and take a walk after dinner.
I hope it helps you.