Would it be too burdensome to treat multiple areas at once from the start?

I started looking into it because I was only concerned about forehead wrinkles, but the more I searched, the more I found that many people take care of the area between their eyebrows and around their eyes as well.

I'm worried that if I only do one spot, other areas might stand out more, but I'm also a bit hesitant about doing multiple spots right from the start.

For those of you getting Botox for the first time, how did you decide when you had concerns about multiple areas? I'm wondering if it would be better to start with the area I'm most concerned about.