As Rusty said, your problem is water pH. Everything else looks good.

MJ is very picky about pH so if you want her to pick up and act right, you've got to give her the correct water.

First, why are you using bottled water? Unless you know that your tap water is bad, use tap.

Second, you have to have a way to test the pH. I suggest a digital pen tester ~$35+ online. If that's not possible, the least expensive option is pH test papers. I've not used them so can't advise you there.

Then you need a way to adjust your pH up and down; there are commercial preparations that are reasonable, which is what I use. You can also use household preparations, but I don't have experience with them.

If you will fix the pH problem, I believe your plant will reward you with an explosion of growth.

Good Luck.