All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
You are not obligated under the Sharee‘ah to change your name. The name “Nafaa’is” is meaningful. The Arabic word Nafaa’is is the plural form of Nafeesah (valuable/precious attainment). Ibn ‘Allaan said in Daleel Al-Faaliheen: "Nafaa’is is the plural form of Nafeesah, which means what one desires to have, such as knowledge, property, or the like." [End of quote]
Scholars said that “Nafaa’is Al-Amwaal (valuable properties)” were called as such because the owner’s self (Nafs) is attached to them.
As far as we know, it was not reported that the Prophet disapproved of meaningless names, and it was not customary among Arabs to bear meaningless names to begin with. Rather, it was reported that the Prophet changed some names which denoted unpleasant meanings.
Allah Knows best.