How bad is my nutrient lockout and what are my chances of recovery?

My Crystal Meth Auto is the only one having issues right now, it was displaying claw leaves and I flushed a little, it recovered a bit then I added half the nute dose and again it went downhill, now it is not displaying claw leaves but it is displaying what appears to be calcium deficiency, and buds haven't fattened up in 2 weeks. This problem happened right after feeding nutes. It still has 3-4 weeks to harvest.

I have flushed for 2 days now, will prob flush tomorrow as well and don't know if I will add nutes in the future. What are my chances of not ending up with popcorn buds?

Here's the bud comparison 1) Crystal Meth currently at the start of week 5 of flowering:

2) Tutankhamon currently at week 4 of flowering, meaning it is 1 week younger.

3) And Mexican Airlines at the start of week 5 of flowering it's only 2 days older than the CM:

First step: Stop flushing. You're not helping your plant by giving it so much water day after day. A single flush is good enough.

Second Step: Restart your nute schedule at it's lightest. I would recommend 1/8th strength.

Third Step (And most important): WAIT. Your plant actually looks really fine. If you keep doing stuff to it though it'll never have a chance to recover from what you have done to it. It's roots aren't getting oxygen if you keep flushing it with water. Give your little girl some time she'll be fine I promise.

You look like you're doing real good man. Just check your PH's and start nutes at 1/8 and you'll make it to harvest I'm sure of it.

Just as a note the leafs will stay burned like that. Nothing is going to bring back the green this late in flower. But treat your plant slow and gentle like a princess and she'll smile for you.

Hello, it seems that the plant is recovered although most big leaves are screwed up with the orange calcium deficiency dots.

On the other hand, my Tutankhamon auto is also developing calcium deficiency though it looks less screwed up. I think I know what the problem is: I was going to buy calcium supplementation by Canna and even the instructions said it should be use as a medicine instead of a regular nute and that calcium deficiencies are rare, specially when using water from the tap.

I think it has to be nute lockout. My reasoning is this: My Mill's DNA supplements have 3 dosing charts and I'm using the lowest dosing one BUT I think it is a chart for plants that are at least 1 meter tall then this low dose chart would work great.
But my plants are less than 45cm tall, all three of them so it is like adding a lot of nutes for them, the only one who has been able to keep up is precisely the Mexican Airlines, maybe because it is twice or three times as big in terms of foliage compared to the other two so it can handle it.

So I'm just going to reduce the amount of nutes to about 1/4th on those 2.
Tuntankhamon having calcium def.