Personally I don't think there is a specific time to wait, but you should give the chameleon plenty of time to recover. Gestation and delivery are energetically costly - for this reason, after delivery I make sure my females get plenty of food (also fattier feeders I would not use often...
I have multiple holes in the bottom of my cages to ensure drainage. The best option is to leave the bottom of your enclosure bare - this way you will not have anything to interfere with proper drainage and it will be easier to clean.
My ambilobe had much more red at 4-6 months than later, even though he seems to be having red "phases" between stretches of several months with no red at all....
That is your best option - unfortunately it is difficult to solve health problems without a proper diagnosis. Also, your vet will be able to suggest prope treatment!
Foggers are not ideal for chameleons - they barely change humidity in most enclosure and don't provide any drinking water... A misting system is a better alternative.
If you have not been misting in the past few days, maybe your cham is dehydrated? That could cause the eyes to be sunken in... Stress in general will do that, so that may not be necessarily indicative...
Given the fact that he was "completely passed out" I would bring him to a Vet as soon as...
It is normal for healthy chameleons to move around, especially when they are hunting. As long as your cham has water and food and temp and humidity are fine, I would not worry. If your Cham were a female it may indicate that she is ready to lay eggs/give birth.
Nice girl - she looks really young for sure, and I would agree that she is just a few weeks old.
It is hard to predict how fast chameleons will grow to their adult size, as there is a lot of individual variation. I am unaware of the existence of growth charts for chameleons, but would...
I believe most people don't mist at night and actually have the last misting session about an hour prior to turning the lights off. They will not drink at night anyway and humidity can be managed with a humidifier. Also, in a glass enclosure, you won't need to mist as much/often, as humidity...