If its too sandboxy, I'm not sure where or how to start!
When I get stuck in "analysis paralysis" due to more than 7 items on the menu of options... I have a fallback I'll share here:
Just ask yourself "what happens next?" because that's all that really matters to the story.
I think off it as just placing one foot in front of the next and focusing on my feet and where I am stepping rather than eyes to the horizon or eyes to the sky.
Let me know if you try this and if it works for you.
I've come to think that the entire point of GMing is the be able to ask that question at the table, and help the players answer it.