Broadly, this is often linked to receiving wise counsel to resolve disputes within your family, making ventures and initiatives upon receiving awaited news, family elders ending disputes among siblings and no financial hardship or livelihood worries.
You will fix it, but it will be asking for help and you will not get it today.
In dream lore, sick sibling in your dream indicates making the most of very auspicious work opportunities, convincing yourself you can achieve anything, getting back on your feet soon and finding morale again, experiencing a great spiritual growth, welcoming a situation at home with great joy.
One practical suggestion: if something doesn’t turn out as you planned, don’t martyr yourself anymore.
Dream Oracle reveals that the dream about sick sibling may point to not withholding help from those suffering poverty and hardship, doing a successful piece of work and winning the admiration of those around you, earning colleagues’ admiration through success on an important project, the blessing in your money increasing over time, becoming someone widely talked about and followed through success.

