Tips on method for remaining conscious?

[Sammie]

So I used to be able to very easily be in the Theta brainwave state back in 2012 and remember everything in detail without effort after meditating for 1 month intensely. Im wondering if anyone here has any good methods to gaining back that kind of conscious in theta or even delta Waves.

[Lumaza]

So I used to be able to very easily be in the Theta brainwave state back in 2012 and remember everything in detail without effort after meditating for 1 month intensely. Im wondering if anyone here has any good methods to gaining back that kind of conscious in theta or even delta Waves.

Yes, meditate for 1 month intensely! 

In other words return to what worked before. If it's not broken, don't fix it! 

[Szaxx]

If things don't change then you may find alpha wave stimulation an eye opener. It'll open the closed door and keep your awareness far more active in the required state. Delta and theta can zonk you out cold once trained. That's their main purpose.
Try it Sam and see if it works for you. Gamma is also helpful, this can activate more than most can chew and may help too.