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Here is the approximate amount of sleep a baby needs at certain ages.
Newborn to 3 weeks – 16 to 20 hours per day
3-6 weeks – 16 to 18 hours per day
6 weeks-3 1/2 to 4 months – 9 to 12 hours at night plus 2 daytime naps (roughly 2 to 3 hours each)
4-6 months – Same as previous except the night sleeps may get longer and the naps will shorten
9 months – 11 to 12 hours a night plus 2 naps of approximately 1 hour each
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