Hi!
I also studied for the MCAT while working full time. It can be stressful, but overall I still think I had enough time to prepare and I was happy with my score. I took the exam on Jan 23 this year and I started reviewing the 2nd week of Oct 2015. I started with subjects I needed more review on (I took Gen Chem 4 years prior to my exam), and made my way through all the material by subject. I found I was much more productive this way than when I started off trying to do a little from each topic at a time, especially with only two hours to devote to studying each night. I went in this order --> Gen Chem, Orgo, Biochem, Physics, Bio, and I ended on Psych/Soc. This flow worked really well for me.
I studied for about 2 hours a night Mon-Thur and took Fridays off to see friends, relax, and try to avoid thinking about the MCAT. I then studied for around 8 hours total on the weekends (usually 4 hours on each day). When I got closer to the exam (~6 weeks out), I started taking full length practice tests each Saturday (which pretty much takes over your whole day) and reviewing them on Sunday. I also tried to do flashcards on my lunch breaks during the week, but that really depends on you having at least 45 minutes at lunch.
It's really important not to burn out. Make sure to keep a regular sleep cycle, exercise, eat well. Take the time you need to care for yourself during the week. This is extra hard for those of us working full time, but still really important.
Good luck!!