While the first,
early tooth is an event and a reason to celebrate, parents may worry about their children
teething too
early or too late, but it's
such an individual thing that some children may start showing teeth soon after their third month while others may wait a year before a single little white cap appears.
According to The Baby Sleep Site, sleep regressions — which the site defines as «a period of time (anywhere from 1 — 4 weeks) when a baby or toddler who has been sleeping well suddenly starts waking at night, and / or skipping naps (or waking
early from naps) for no apparent reason» — tend to happen around major changes in baby's development (
such as growth spurts or
teething or crawling).