How are you feeling on this schedule? Is your energy okay? Sleeping alright? Or are you forcing or pushing your way through all this?
Everyone grieves in their own way. So if your way through this is uber-health and fitness then so be it. Some of it will fall away with time and some of it will stick. Just give yourself the space and time to figure it out. After my mom died I spent a few months on the sofa using a beer and benadryl combination to try to get any sleep. So your method is at least better than mine