After 6—8 months, many boys and girls go through a period in which their sleep seems to “worsen”: they wake up more often, struggle to fall asleep or seek the presence of their parent.It is not a real regression, but an evolutionary phase linked to many new achievements: they learn to sit, to move in space and to recognize who is present or absent.It is also the period in which normal separation anxiety appears: the child understands that mom or dad can move away and seeks reassurance, even at night.How to accompany this phase: serene rituals and predictable (bath, soft lights, little song or short story) .- calm and constant presence if he wakes up, but avoid strong stimuli or nighttime plays.- Give him a few minutes to try to go back to sleep on his own, while remaining available if he cries or fusses.- A transitional object (plush, cover, scarf with your smell) can help him feel more safe.- lots of play and movement during the day: physical tiredness helps him sleep better at night.Remember: it's a phase. Sleep doesn't 'go back': it changes with growth.