Hey Mrs. aguirre welcome back to the running family,
You really have answered your own question, I think your setting your expectations alittle to high, because I can understand why your not improving.
There is no cosistant workout, I think you would improve by getting on a training program, there are plenty of free programs available online to help you get started
couch to 5k is one of them or even smart coach on runnersworld.com
Second your working 6 days a week 12 hours a day, your so tired and with no energy I cant imagine even trying to run with the workload.
Third its only been a month i think you need to give yourself a break your not 16 anymore so everything will come alittle slower.
im not here to scold you as its impressive that you can train for a 5k and run it in 48 minutes on you workload
I think it will come to you with a training program consistant training time and energy to do it.
jmho
goodluck and keep us posted
Dennis
It's not only about finishing, its about finishing healthy!