Plan two. Don't do too much equipment exercise and simple exercise before going to bed, which will affect sleep. You can do some sit-ups and push-ups in the morning, and it is effective to increase the number of times every few days. You can exercise with simple equipment at noon. Don't look at the simple equipment, but practice the whole body! Such as arm strength dumbbell stretcher.
As long as you persist, the simplest way will enable you to achieve your goal. Where there is a will, there is a way. I believe you can!