Crying to eat

My little one lately has been waking up at night around 530, but she doesn't cry to be fed like she used to! She will cry during the day when she's hungry, but at night she just makes baby noises. Two nights ago she went 9 hours without eating, I woke up at 830am and fed her after I put her to sleep at 1130pm (she woke up at 530, took her paci, fell asleep until 730 and got a little fussy around 8 but never cried.) Last night she went to sleep at 9pm, woke up at 5, took her paci but stayed awake until 8 and never cried once to be fed. She has a cold right now (just cough and runny nose, no fever) I'm all about her sleeping longer stretches at night, but is this normal?!?! Should I just get up and feed her when I know she's awake even if she's not giving the typical cues? She's been gaining weight well, born 6lb 13oz and is now 12lb 2oz at 2 months old.. It just seems like a long time for a baby to go without eating!!