Decreased sleep can be due to various reasons as deranged blood sugar, anxiety, depression,stress,thyroid hormone disorder,hormonal imbalance etc.If you have experienced sudden change in the sleep pattern then the cause needs to be investigated.
There are few things which might help you as:
1)Go to the bed same time every day.
2)Avoid taking naps in the afternoon.
3)Avoid any kind of stress,anxiety while on bed.
4)Do some form of exercise regularly.
5)Go to bed at least two hours after dinner.
I would advise you to get a complete evaluation by a Physician so that if required appropariate treatment can be started soon.
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