Evening fussing- cluster feeding

C
Baby is 8 days old now and for the past few nights has been very fussy from about supper time to midnight. She feeds constantly and cries whenever she isn't feeding. And she's eating, not just gnawing at my nipples. I read somewhere that this is cluster feeding...
Anyone else experience this? How long does it last? She sleeps well after (fingers crossed that keeps up), but the evenings are so tiring.