How to say “I can't carry all the shopping in one go — come and give me a hand.” in Japanese

In Japanese

買(か)い物の荷物(もののにもつ)、一回(いっかい)じゃ全部(ぜんぶ)運(はこ)べないよ。ちょっと手伝(てつだ)いに来(き)て！

Kaimono no nimotsu, ikkai ja zenbu hakobenai yo. Chotto tetsudai ni kite!