This is the 1276th most frequent Catalan word.
poca
"Little" or "few."
Here, 'poca' is used as a quantifier meaning 'few' or 'not many' and modifies 'gent' to indicate a small amount.
Hi ha poca gent a la festa.
There are few people at the party.
'Poca' expresses scarcity or a limited amount in this context, modifying 'paciència' to communicate a dwindling supply.
Ajuda'm una mica, que em queda poca paciència.
Help me a bit, as I'm running out of patience.
In this case, 'poca' describes an insufficient amount, referring to the low intensity or scarcity of 'llum'.