There are various ways to counter sleep:

Lightning Main - Root of warrior team (with Jugo / Iruka)
Water Main - Clone as passive with healer ninjas (if you are not using water main as healer)
Wind Main - Shadow clones passive
Earth Main - Genjutsu Reflection ninjas like kurenai

best way to counter sleep is to run healer / debuff removal ninjas ( jigokudo, mabui, kurenai etc).