Top leaves wilting

Good day to you all!
This is my first post on this forum, I think, but for a long time I have been using this site as I found it a great source of good information.
Have been growing for several years and first time I am experiencing this kind of a problem.
I have an autoflower plant growing in my closet, think different, now in day 17 from poping out from ground.
The problem I am getting for the last 4 days is that I get top leaves wilting at the end of a day cycle. For the first 16 hours the plant looks great and happy, and for the last 2 like it gets tired. Then after 6 hours of sleep it comes back to life all happy and looking great for the next 16 hours with the same scenario for the last 2 hours. Its like that for the past 4 days.
Here are the pics.. first one how it looks for the first 16 hours, and second one when she says "I had enough for today"

I do push her a little bit to the limit (or maybe over) with the light intensity and higher temps to get her transpiration rates higher.. as I want her as bigger as soon as possible Do I need to stop with that practice She does look ok the next morning and for the whole day, well.. almost whole day. Its like she gets to a point where she transpire more then she can take from the roots... and turgor starts dropping. Have no problem with soil moisture... well she wouldn't bounce back immediately in the morning and again look great.
After this 16 hours when I find her wilted I am dimming the light a bit for the last 2 hours and lowering temp back to 25C just to reduce possibility of light burn from QB LED.
What I did 4 days ago was topping her, actually fimming after 5th node and she took it well and haven't slowed down at all.. maybe half day, but from that day she gets "tired" after 16 hours of hard work Any advices?

Looks okay to me I think. Doesn't look very unhappy, pretty sure it's normal for plants to go a little droopy or "tired" towards the end of their "day". But I am far from a pro

Thanks for your input, I appreciate it, hope you're right.

Weed plants are, as you guessed it, WEEDS. Much like the common garden weeds they can survive a heap of stress and damage and still grow, so I'd say keep up the stressors that you have in place I.e. the higher temps etc. If this "issue" gets any worse tho then probably best to stop stressing it so much and as you get further into flower I'd dial the temps etc down a fair amount as you wouldn't want all your hard work to go to waste within the last couple months.

Yes, of course, that is what I was planning. Just wanted her big enough to finish seedling phase and enters into veg strong with good amount of roots so my HST doesn't stress her too much as you never know when autoflower will kick into flowering stage. When it does, I'll start pampering her.
P.s. I would give you a Like but I don't see a button, probably have to be active for awhile.
Thanks for your well put opinion.