Its taken me about a week (with lots of wifi issues) to get from lieutenant 1 to commander 29 (its allot harder i made ltcmd one day and then commander the next but the rest has all been as a commander and i should have made it but had several connectivity issues
yet it took you 10 month to find an appropriate response to this thread!
I leveled my first char from 1 to 50 within a week. As soon as you hit level 10 start running the Mirror Events and you're fine. Don't forget to run the missions for equipment and EC between the Mirror Events.