
Baby not sleeping at night?
Finding solutions to your baby not sleeping at night, starts with refining your problem statement

Less sleep
Check the sleep requirement by age in months and find if you expectation is within the range or not. Also do not compare with your neighbour's kid. Sleep requirement varies from child to child and some require more sleep than others
Waking up in 30 mins
Some babies wake up 30-45 mins after they are put to bed. Usually these babies expect the parents to be around when they wake up and might be upset if the parents are not around
Night waking
Babies waking up multiple during the night and requiring support to return back to sleep is creates biggest challenges for the family. This is because the baby will go back to sleep but the sleep of parents are disturbed. Bedtime for babies and parents will mostly be different and the sleep cycle of babies are shorter - 45 mins to 1 hour while parents sleep cycle is around 1.5 hours. This means the sleep cycles could be out of sync and parents may be awaken from the restorative REM sleep. Parents will clock 8 hours of sleep but will not feel refreshed. Mothers especially are hit hard and adverse effects include fatigue, feeling low, anger, forgetfulness, reduced immunity and falling sick often and perhaps delayed recovery from post partum blues
Fighting bedtime
It might seem that baby does not like to sleep. They might fight, cry and be upset at the very sight of bedroom. You will have to understand why your baby does not like sleeping
Crying to bed
It might seem that baby does not like to sleep. They might fight, cry and be upset at the very sight of bedroom. You will have to understand why your baby does not like sleeping
Crying in sleep
Some babies might cry in sleep. This usually happens in early morning. If it happens for a day or two it might go away on its own. This is a bit scary when the baby is crying with eyes shut and could be crying inconsolably. If crying repeats at the same time every day, then you to get it checked.
Nightmares
Some babies might cry in sleep. This usually happens in early morning. If it happens for a day or two it might go away on its own.
Early morning awakening
Babies could wake up very early in the morning and it can become very inconvenient for parents. In some cases the baby will return back to sleep and in some cases they could be wide awake and want to play
Searching for mother
Babies waking up could search for the parents especially the mother and will be upset if the parent(s) are not around