Good morning everyone. I’m trying to figure out ...

last two pics are in flower. first two are not from what I can see. Just feed em well and you will be ok. the earth has a lot of what it needs.

Depending where the plants are standing they might get different amount of light this can delay/fasten flower. Just make sure u have for entire flower periode the 12/12 else won't finish like this.

The exact length of darkness each plant needs to initiate flowering phase can vary. So, some may start sooner than others. as far as fertilization... these look nice and healthy. If you do change it up and they take a nosedive, rethink 'bloom' nutes. the plant may need a bit less N but still needs a good amount. I've played with P and K levels quite a bit over the years and don't see much of a need to blast a plant with it at anytime - usually leads to toxicity symptoms, but this all depends on everything you've put into the ground since you started.. feeding heavily early can reduce how much you feed late. It all has to average out in the end relative to growth rate. fertilization is more about maintaining levels around the root that keeps it readily available and not impeding each other. It's not even the ratio it'll be used in the plant. It's more about making it easily available to the roots to take in.. and that is different than the ratio in which it is used (active transport and such is why.. not everything enters through diffusion, or "mass flow")

It looks like they're both going into flower, just one is quicker than the others. They look very healthy and well looked after

I'm in SA too and you either planted too early or just in a bad spot. Plants shouldn't be flowering here yet unless they get a lot of shade throughout the day or went from long light hours indoor to shorter hours outdoor. The 1st 2 photos the plants look fine and still in veg, but the other 2 shots the plant is properly in flower. The angle of the sun is changing really quickly at the moment, so hopefully it moves enough to give this girl more light to kick back into veg. If she does the leaves and growth may look a bit strange for a while, but just let her do her thing. Normally my plants go into flower somewhere in Feb, but again depends on where you have them. Some can flip as early as end of Jan or only in March. There is still quite a bit of season left, so I'd advise to top the ones in veg until mid to end Dec so you have bushes and not tall trees, otherwise they're looking great!

Pics 3 and 4, definitely flowering. Pics 1 and 2, no evidence of flowering. With Summer about to start in the Southern Hemisphere and the days getting longer, it is doubtful flowering will continue. They will probably continue veg growth until about March, then flower. The plants in pics 3 and 4 will most likely revert back to veg growth, but you could start with bloom nutrients now, if you think they will continue flowering, but if they go back to veg growth, obviously change back to grow nutrients.