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Advice for fertilizing adenium obesum.

i posted this in adenium forum but hoping to get a response here:

I repoted and raised my DR obesum about 4-5 months ago and added dymamite slow release fertilizer to the well draining potting mix when I did. The plant is doing very well but im wondering if its the best course of action to just add more slow release or to start using a water soluable fertilizer on a particular schecule. She has given a few flowers but not very many and recently dropped all her buds. i have her inside now for winter and backed off the watering some and have not fertilizer since. I live in N. Central FL. i have included pictures. Thanks for any advice you can give. its my first DR.