It is true that time is not your only resource to allocate, and one would need to manage energy as well to handle a side project. The nice thing about energy is

It is true that time is not your only resource to allocate, and one would need to manage energy as well to handle a side project. The nice thing about energy is that it's not as rigid as time, and you can expand your energy budget by improving your overall health. The common advice is to improve your sleep, diet, exercise routine and social life. They all require some time investment, but it seems like you have some to spare.