adverb, adverb taking the 'to' particle, noun or participle which takes 'suru'
toddling; tottering; with unsteady steps
Describes the unsteady, waddling walk of a baby or young child. Often used adverbially with と or as a する-verb.
赤ちゃんがよちよちと歩き始めた。
The baby started toddling along.
子犬がよちよちしている。
The puppy is tottering around.