Best of with your newest adventure, Rubi!
Things to know about hibiscus:
* They have very aggressive root systems and need repotting to be at their best.
* They are something of an outlier when compared to other plants insofar as their nutritional needs are concerned. They like a more potassium that nitrogen (quite unusual) and will suffer if offered too much phosphorous, so avoid all bloom-booster/ high-phosphorous fertilizers for containerized plants.
They like water, but don't tolerate wet feet well, so a fast-draining, well-aerated grow medium works best. I would avoid self watering pots because they tend to encourage too much water held in the grow medium and promote build-ups of dissolved solids (salts) from fertilizers and tapwater.
* They are sun lovers and do best at temps between 70-80*
Another thought - if you like the color, please don't forgo buying another plant of the same color if your cutting doesn't work out. Trying to propagate a low vitality plant or one in steep decline is always a low odds aspiration, so it's likely that's the obstacle as opposed to the plant's color.
Al