First time mom with so many questions, one of them being why would my baby not sleep properly at night?!

Well I ve had people telling me that if you couldn’t sleep properly at night during pregnancy baby won’t sleep either.

Is there any truth in this or is it just one of the myths following pregnancy and newborn.

Please share your experience and please give me some hope that baby will sleep and it will get better 😓

Btw baby is 4 months and still wakes up 2-3 times, sometimes every hour in the night and is a little difficult to put back to sleep..and am exclusively breastfeeding