First Grow - One single plant

Here I go. This is my first grow and I started with one single plant. I already started a few threads in some other areas, but I'll just update any other notices in here.

So, what do I have ?

Setup

Light: 1 x 23 w CFL - 6500 K - 1500 lumen
Light Cycle: 24/24
Environment: Cardboard box - 50cm x 55cm x 25cm (19,6inch x 21,6inch x 9,8inch) [W/H/L] with no reflexion surfaces
Constant Temperature: 26-32 degrees Celsius (78,8 - 91,4 degrees Fahrenheit) - Hot, I know, but above 88 degrees F temperature was only for two days.
Ventilation: One 12x12 mini-fan for stem consolidation and no fans for cooling temperature down (no need lately)
Pot Size: 2 gallons pot

I'll just have to start at day 26, because that's where I am right now. I'll attach some pictures from past days below and post today pics in a new post.

Picture 1: Day 12
Picture 2: Day 14
Picture 3: Day 15
Picture 4: Day 17
Picture 5: Day 17
Picture 6: Day 20
Picture 7: Day 20
Picture 8: Day 20

So, as I said, I'm in day 26 right now. I have to mention one thing: No nutes were ever given to the plant

Current Day: 26
Temperature: 26 degrees Celsius (78,8 degrees Fahrenheit)
Plant's Height: 23,5 cm (9,25 inches)
Light Cycle: still 24/24
Light Distance: 12-15cm(5-6 inches)

- I still have only one CFL 23w 1500 lumen 6500 K, and I was wondering if I should get at least another one.
- I red that flowering should start when the plant is about 25-30 cm (9,8 - 11,8 inches) high, or when 8-14 internodes are reached. Well ... my plant is almost at the lower limit in this case, but internodes are not even near 8. I only have 3 internodes. I'm willing to know when should I start flowering (by the upper criteria or another one).
- I'm thinking about reducing the light periode to 20/4 starting tomorrow. Would that be a mistake ?

Thanks in advance for any advices, and, as I already did in all my other threads, I appologize if my english is bad.

I'm attaching below pictures of day 26.

May God be with you, growers

I agree with you about reducing the light cycle to 20-4,
Then i would go 16-8,
then when you want to start flowering go to 12-12

But alas, i am still a noob at growing.

Thanks for the answer, W1taker.

I was thinking in going 20/4 1 week, then 16/8 another week, and then 12/12 and changing light type to 23 w CFL 2700 K. I still do not know if I should just use 2700 K on flowering or both CFLs, but, on the top of that, I still don't know when flowering should be started