The term "big" is thrown around frequently in the AB/DL community. This could be equivalent to, or in addition to "CG" / caregiver. Though used frequently in the BDSM community in reference to "DOMS," a CG role has taken root in the age play community too. For some that practice AB/DL, a CG is not a requirement but for others, the presence of a participating partner is absolutely necessary to fully engage in the "little" mindset.
For me, I have historically never needed a CG to make my little space work. If anything, it required too much effort to seek and find someone willing to do that for me. But, having had the opportunity on a few occasions to be on the receiving end of CG care, there's no comparison, and it is a truly wonderful experience! I never thought I would crave or desire that from a partner, but it really is an amazing experience.
Hear this, there is freedom to need what you need in this community. There's a tendency to see many more littles in the community than bigs, and that is nobody's fault. I would encourage community members, especially those involved in committed partnerships/relationships to seriously consider the needs, expectations, and desires of your partner. Perhaps ask, "what do you need from the role play? What makes your little space sing? What makes your CG space sing? Would you like to switch roles and try something new?"
Open mindedness can go a long way in exploring new territory you never though could be possible. But, it starts with an open mind and willingness to be slightly uncomfortable in uncharted territory.
Enjoy little, Try little, Enjoy big, Try big.
But always stay padded, friends.