入籍申請提前90天遞交？

請教前輩：
N-400 instruction 上寫

If you are applying based on five years as a lawful permanent resident or based on three years as a lawful permanent resident married to a U.S. citizen, you may apply for naturalization up to 90 days before you meet the "continuous residence" requirement.

意思是，我可以提前90天遞交入籍申請？
我期間回國過幾次，每次2-3星期，這不會影響提早90天遞交吧？
提早遞交，有何利弊？

謝謝！！