Byebyes

5 clues
Farewells
Exit precursors
Farewells from a tyke
Sleep for little children
Words when the party's over
Similar answers:
Abye
Andnowgoodbye
Atsayinggoodbye
Babyeagle
Babyeel
Babyeggplant
Babyelephant
Babyelephantwalk
Beddybye
Beddybyetime
Bobbyewing
Bye
Byeallrights
Byear
Byebirdie
Byebye
Byebyebaby
Byebyebayh
Byebyebirdie
Byebyebirdiehard