4 nights now where baby has eaten every 4ish hours. Googling 3 month growth spurt gets lots of articles. This one (http://www.parents.com/baby/development/problems/growing-baby/) has:
Researchers are still trying to figure out exactly when and how these periods of growth occur. Some experts think that they last between two to seven days and happen at predictable ages—10 days, 3 weeks, 6 weeks, 3 months, and 6 months. Others say there's no set schedule and that the timing varies from baby to baby. But moms recognize a growth spurt when they see one. "I've had mothers swear that their babies grew overnight," says Michelle Lampl, M.D., Ph.D., a growth researcher and associate professor of anthropology at Emory University, in Atlanta. "They tell me their child's legs were suddenly longer or the diaper or socks seemed much tighter." Dr. Lampl's own research backs them up: She's found that babies can gain a whopping one to three ounces and grow almost a centimeter in length in 24 hours, followed by days to weeks of almost no growth at all.
I totally agree with this! It really does seem like Eli grew overnight.