Is there a morning service earlier than 7:45?

No

What are you looking for there? Go to Brooklyn and you'll find more sooner.

Unfortunately, only 7:45am and 8:45am are available.

I found this on internet https://www.ejsny.org/schedule And looks like a minyan at 630am at Safra Synagogue

And somewhere else? And when is there an approver? Thank you

I do not think so