You will be much younger than several of the students here, and right in the middle of many, as far as age goes. If you have the desire and drive to start out anew, then you should waste no more time and get started.
Time is wasting! There is no time better than now to begin!
It would be best if you can make a commitment to keep going with your studies five to six days a week, at least an hour a day. If you have to take a break, you can either review what you covered before, or just take it from where you left off. I would recommend reviewing what you previously covered. It's your choice.