need immediate help with plant

Woke up to find some weird things going on with my plants. before today my plants looked very healthy. Not really sure whats wrong but i'm thinking its some kind of pest. please help with some solutions that might help.

First pic - Small hole near the bottom of the stem?

second pic - out of nowhere the some leaves are turning a bright green color. The leaves feel very weak like there about to fall off.

Third Pic - Full pic of plant

fourth pic - close up of leave with spots

fifth pic - black spots on bottom of leaf.

all of these just came out of nowhere.

not sure but it could be caterpillars or bud worms. But its definitely a pest. Id get some spray like serenade spray. Cheap and effective and at most garden shops

could I use alcohol diluted with water for bugs?

wow get a magnifying glass and look under the leaves, not only does it like a worm but also you have spider mites.. the hole in the stem could be severe case of worm infestation take a small dropper and fill the stem hole with a slight sugar solution..wait and see if they come back out of the hole.. then plug the hole with anything that they can't chew into. like a nail or a piece of metal. i have taken a nail and inserted thru the stem with 3-5 weeks left to flower..

Not sure if it would hurt the plant. Try hydrogen peroxide diluted in water and hopefully that will work. Make it strong so you dont have to spray so much

Whoa man, very infected my friend. Very. Hope it gets better. Cuzz she looks like she is on the brink

Dang, total pest invasion.....I'd ditch that bitch, good a good cleaning and pest bomb and start over. yikes, sorry...

That reminds me of some old growers,they said you should you should suffer a plant just before harvest.
I had to ask what is suffer? They said drive a nail in the stalk to make it suffer and it would increase the potency.
Did it work? I don't know,but I always smoked their grow.
Sorry I can't be any help,if it wasn't for the hole I would think cal/mag. GL