Joseph
Thats baloney. We have thousands of written pages from every period covering every facet of daily living from when we wake up.until, nay including when we sleep, all year round from when we are born (even before that) to after we die. There are even recordings of personal minhagim like those of the maharil. NONE mention shlisel chalah. Even chasidim like the nitei gavriel acknowledge it is a chasidish minhag and thus can not be much older than a few hundred years which coincidently is where we first find it recorded among our aformentiined 1000s of pages