"sleep regression" meaning in English

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      "expansion": "sleep regression (plural sleep regressions)",
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  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
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          "langcode": "en",
          "name": "Psychology",
          "orig": "en:Psychology",
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      "examples": [
        {
          "text": "four-month sleep regression",
          "type": "example"
        },
        {
          "ref": "2020 April 15, Jessica Wapner, “Are Sleep Regressions Real?”, in The New York Times",
          "text": "Between their input and Google’s, Smith surmised that her daughter was experiencing what many parenting books and websites refer to as a “sleep regression” — a stretch of days or even weeks where babies suddenly don’t seem to sleep or nap in the same ways they used to.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A period of days or weeks during the first two years of life characterized by a change in an infant's sleep patterns, leading to irregularities such as increased awakenings and fussiness."
      ],
      "id": "en-sleep_regression-en-noun-vMeTRMXR",
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          "week"
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        [
          "change",
          "change"
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        [
          "infant",
          "infant"
        ],
        [
          "sleep",
          "sleep"
        ],
        [
          "pattern",
          "pattern"
        ],
        [
          "increase",
          "increase"
        ],
        [
          "awakening",
          "awakening"
        ],
        [
          "fussiness",
          "fussiness"
        ]
      ],
      "raw_glosses": [
        "(psychology) A period of days or weeks during the first two years of life characterized by a change in an infant's sleep patterns, leading to irregularities such as increased awakenings and fussiness."
      ],
      "topics": [
        "human-sciences",
        "psychology",
        "sciences"
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  "word": "sleep regression"
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{
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    {
      "form": "sleep regressions",
      "tags": [
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  "lang_code": "en",
  "pos": "noun",
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        "en:Psychology"
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      "examples": [
        {
          "text": "four-month sleep regression",
          "type": "example"
        },
        {
          "ref": "2020 April 15, Jessica Wapner, “Are Sleep Regressions Real?”, in The New York Times",
          "text": "Between their input and Google’s, Smith surmised that her daughter was experiencing what many parenting books and websites refer to as a “sleep regression” — a stretch of days or even weeks where babies suddenly don’t seem to sleep or nap in the same ways they used to.",
          "type": "quotation"
        }
      ],
      "glosses": [
        "A period of days or weeks during the first two years of life characterized by a change in an infant's sleep patterns, leading to irregularities such as increased awakenings and fussiness."
      ],
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          "psychology",
          "psychology"
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          "day",
          "day"
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          "week",
          "week"
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          "change",
          "change"
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          "infant"
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          "sleep",
          "sleep"
        ],
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          "pattern",
          "pattern"
        ],
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          "increase",
          "increase"
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          "awakening",
          "awakening"
        ],
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          "fussiness",
          "fussiness"
        ]
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      "raw_glosses": [
        "(psychology) A period of days or weeks during the first two years of life characterized by a change in an infant's sleep patterns, leading to irregularities such as increased awakenings and fussiness."
      ],
      "topics": [
        "human-sciences",
        "psychology",
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  "word": "sleep regression"
}