How can I sing high notes in the morning?

I'm a soprano singer in my worship team and I practice all week for Sunday morning and it goes great. However, I have difficulty hitting the high notes in the earlier part of the day and all of my practice and efforts throughout the week go waste. How can I improve?

Hi, Rini! If I'm understanding you correctly, it sounds like your voice may need a bit more time to "wake up" and warm up in the morning. I'd experiment with waking up a little earlier if possible and starting gentle vocalization well before the service starts. You may also benefit from increased hydration the day & night before, so you have a head start on being hydrated for Sunday!