How do I start?

Hi all,
I’m someone who has been postponing starting the GRE prep for months, almost years now. I started the GMAT prep 2.5 years ago and dropped it early because of change in plans. I have now decided to take the GREs and apply for my MBA in the UK this coming season.
I think I see it as an overwhelming task as I’m someone who has not had a quick grasp on mathematics, I also come from a creative background so this feels daunting and so so scary to me.

I’m not even worried about my applications or deadlines, I just want to a good score here so that I can apply anywhere I’d like.

I’d be thankful for any worthwhile advice and thoughts on this and how to start. Did you go through this? How did you manage?

Much thanks, have a lovely day.

Our usual advice: I’m Overwhelmed Plan for quant and 1-month plan for verbal.