Actually my one summer baby was the unsettled one.Trust me,and him,to be different.
Harry used to wake four times a night ,every night at around 3-4.He did eventually stop.His thing was unfortunately an obsession with his ten teddies being in precisely the right place in his bed.He'd move in the night,one would fall out and he'd panic.Not fun.He still doesn't sleep well,just doesn't wake me anymore.
Erin has her nightlight beside her in bed.She used to sleep lovely,till my brother's now ex,then oh, taught her how to play monsters in the dark at bed time.Four years later,they're still there.