Your mother is ill at home. You can do more housework. Don't sit down immediately after a good meal. Stand for half an hour. You can use this time to wash dishes and clean the table.
You can also do some simple sports at home, such as skipping rope and climbing stairs. You can also try yoga. Don't think that yoga is a woman's patent. If the heart is not good, it is not suitable for strenuous exercise. When exercising, don't think about doing it for a long time, but do it in stages. If conditions permit, swimming two or three times a week is very effective and will not bring too much burden to the heart.
In terms of eating, you don't need big fish and big meat, just eat more grains and fish. At the same time, pay attention to vitamin supplementation. Drinking cattle every day can supplement the calcium you need. There is no need to take any calcium tablets. Who knows if you can absorb them.
In fact, the easiest way is to stand as long as possible, especially half an hour after a meal. Eat less and more meals, don't eat greasy food, and don't be a vegetarian. A reasonable and balanced diet is an important part of health. And drink a large glass of boiled water first in the morning and never eat anything after 7 pm.