Am I doing too much?

In addition to my previous answer to you - Can you suggest good eating programme? - which was basically "it depends"...keep a tab on any injuries, etc as many people succumb to injuries when doing running training on a daily basis (I have to do every other day sessions to keep my knees from going "pop"...but that's just me (I've got 44 years of abuse on my knees).

always be on the look out for adverse signs/ symptoms as indicators of overtraining