I would suggest having your hair in a shorter style. If you have a soft perm or wave introduced into your hair then it WILL need some styling to make your hair look its best.
If you have a shorter style for a while, while you are recovering, you could also have some colour introduced to give you texture and a style that always looks great with minimal styling requirements.
The colour will thicken your hair, not only in appearance but in volume also. The introduction of some colour can be placed so that it works with your hairstyle, not only when you have visited the salon. Explain to your stylist the issues you have with your hair and she should be able to give you a style that will work with your natural wave and fine texture to ensure your hair looks its best while you are unable to maintain it as you usually would.
Have a look on the style gallery
at some shorter hairstyles with colour to give you some idea of looks you could choose.