Hello there my friend. Girls just not pushing hey? I don't know if you've already gotten your answer and things are ok now, but I will respond to it just in case you still need help.
At this stage your plants aren't really growing anymore and will turn to budding up instead. This means the need for nitrogen and potassium drops off somewhat and she's looking for phosphorus and lots of it. Along side your phosphorus, upping the calmag will also help the plant take up phosphorus faster and easier.
Right now, I feel like your looking at a semi-lockout. You're not locked out completely. If you were your plant would not look so good ... But I do believe an excess of nutrients she doesn't need or is taking, is interrupting the intake of the nutrients she does need right now. Example: an excess of nitrogen, along with side micronutrients like zinc and copper can stop your girl from taking the phosphorus she needs.
Suggested actions: ensure pH is around 6.2 first (phosphorus/calmag is taken up best at the pH). Focus on your phosphorus and calmag supplementation while dropping your N/K nutrients. A flush through with about 30% run off, w/ high P/Cal/mag feed. This should wash out excess salts causing the semi-lock/toxicity while replacing it with the food/nutrients she needs👍.
Hoped this helped and if you need anything else, drop me a line in PM.