My small branches are dying

This plant has suffer from a Nitrogen excess in the early stage, I can tell by the middle layer leaves with the claws and the banana peel. Then it has been corrected. By the flowers opening stage, you might be somewhere in the stretch. First control the EC level of the soil by checking the drain to make sure nutrients aren’t curbed by an excessive amount of NaCl in the roots environment, if not you just need to give it some Nitrogen to support the stretch before it’s too late and heading to a Die Back situation (see my diary SPLIFFSEEDS.NL for more details) with some Phosphorus and Potassium for the flowers. You can add some Magnesium and Sulfur if needed and some Enzymes with Humic Fulvic acids to make it even better.

Either of what the other guys said, looks over watered but when did you defoliate? Might just be miserable, give it 24 hours dry and see what happens

Have you been over watering them, not letting soil dry enough between watering.

I'm not 100% but kind of looks like phosphorus deficiency.