More often than not in last week or so I have not been able to have a nap/rest period between work and duties.

As Soak said: bad idea.

I study and write, with a plan that lets you get physical/mental rest you will be fine. Go for it! Just remember to stop before you are fatigued, and to make sure pressures of expectation or commited hours to one place are not too great. (I work from home.)