After being at work all day, it can be daunting to spend a couple of hours reading material that demands a lot of attention and often this time can be unproductive, especially if you are tired.
In such cases it is very often necessary to change your plans and fit some reading in another time.
For example, you could concentrate on the introduction phase or another phase of the work and complete that section before moving on to the next.
By doing this, it means that at least one section will have been completed and so when you go back to it a later stage you can move onto the next section knowing that some of the work has already been completed; bear in mind that it may be some time before you return to this particular piece of work.
It is inevitable that sacrifices will have to be made but maximising the use of your free time aside from your work and personal life is crucial to managing your studies.