Very often a baby will take a few months to get into a routine and sleep the whole way through the night, and you will have to manage until he does. But there is a way that you and your partner can get a good nights sleep, albeit only six hours in one go. Share the load.
If at all possible, split the night into two parts, so both of you get a full five and a half hours uninterrupted sleep. The first shift is 9.00 pm to 2.30 am, and the second is from 2.30 am to 8.00 am. Whichever one of you is better at early mornings should do the second shift, and the other the first shift. It is not an exact science, but it really can give you some well earned rest. If neither one of you is particularly good early or late, then you will have to toss a coin!
This may only be needed for a few weeks, but could be for several months. Normally when he starts solid food this will become less of a problem. However, this saved our sanity when we had our first child, as he didn’t sleep through the night until he was 18 months old, waking 3 or 4 times every night.
If you plan it well and are disciplined with the time slots, it is possible to manage such short nights, so don’t worry….