help petz nursery pet help

help my petz named koko and yumyum are sleepy but how do i get them to go to sleep? :'(
i cant use R or L buttons the R sometimes work not always (i know i need a new one)

I stroked them and then watched them and mine went to sleep by themselves.

Replying to #2

i did that and few minute they walk around again with the zzz! and how do i get them use the r&r