Couple of months? You're in for a rude awakening (quite literally). There's some studies that parents don't get normal sleep cycles until the last child turns 6.
Mine are 4 and 6 now and while it got better, my sleep is still not back to normal. It seems also that the two have some silent agreement to prevent their parents sleep, for example when the younger one got old enough that she would regularly sleep through most of the night, the older one started waking up at around 2-4 with nightmares.
Still wouldn't change a thing though, it's all worth it!
...and then the teens bouncing around the kitchen cupboards for late snacks, and pounding on bathroom doors after everyone else is in bed... then your own insomnia starts. sorry, I was hoping for the same peace. Nope!
Mine are 4 and 6 now and while it got better, my sleep is still not back to normal. It seems also that the two have some silent agreement to prevent their parents sleep, for example when the younger one got old enough that she would regularly sleep through most of the night, the older one started waking up at around 2-4 with nightmares. Still wouldn't change a thing though, it's all worth it!