6 Month Infant Regression - Day By Day

Few things unravel a parent’s nervous system quite like several nights of unexplained infant sleep disruption. In the quiet hours of the night, exhausted parents often begin cycling through possibilities endlessly — teething, illness, temperature, hunger, developmental leaps, overstimulation. Modern parenting can sometimes feel like detective work layered on top of profound sleep deprivation. And yet, babies are often communicating something surprisingly simple beneath the chaos: a temporary need for extra closeness, nourishment or comfort.

Wooffff — here is how it went for our youngest, Mila

Day 1
Woke up at 2 a.m. and stayed wide awake for 1.5 hours.

Day 2
Woke up again around 1:30 a.m. and stayed awake until nearly 3 a.m.

Day 3
I started trying to piece together why this was happening. Was it teething? The second the swaddle came off, her hand immediately went into her mouth. She was waking repeatedly both at night and during the day, kicking her legs and crying hysterically. She refused to nap in her crib. She would sleep peacefully when held, then cry the moment she was put down. Nothing was fully adding up.

We tried giving her 1 mL of Tylenol. She calmed down, fed and went to sleep. Then my mind started cycling again: maybe Margot had brought home the sniffles from preschool and Mila was coming down with something too? Was she too warm? I changed her into one layer. Was she too cold? Back to two layers. Did she prefer the ceiling fan instead of the standing fan?

Day 4
Mark took the night shift. She woke every 30–60 minutes between 10 p.m. and 2 a.m. Around midnight, I joined him and watched him give her Tylenol again because we were convinced she was teething. But it still didn’t seem to help.

At 2 a.m., he finally woke me up and handed over the reins. I fed her, held her upright for a while and suddenly — she slept for four straight hours.

Day 5
We again defaulted to “she’s teething” and gave her Tylenol around 11 a.m. She happily took it, fed well and went down for her usual nap around noon. But by 1:30 she was awake again, kicking, crying and clearly uncomfortable.

That was the moment something clicked for me. The Tylenol could not possibly have worn off in only a couple of hours — especially after a full dose. I fed her again and almost instantly she relaxed into a happy baby.

My eventual conclusion was surprisingly simple: I had developed the sniffles myself, my milk supply had likely dipped temporarily, and Mila was suddenly needing to feed more frequently while also wanting additional closeness and comfort. She may have also been fighting off a mild version of the same cold, which explained the increased need for contact naps and extra regulation.

One of the humbling parts of early motherhood is realizing how quickly we can spiral trying to “solve” our babies while running on exhaustion ourselves. Sometimes what appears dramatic or alarming is simply a temporary shift in rhythm, nourishment or regulation. Babies are deeply sensitive to illness, connection, physical closeness and even subtle changes in a mother’s body. And perhaps one of the quietest forms of maternal wisdom is learning to pause long enough to listen beneath the panic.