Yes, I did not explain well! I need to adjust for someone short of torso. It’s my mum, so I don’t have her here to measure and I don’t trust my dad to measure accurately so I only have her bust, upper bust, waist, hips and back waist length measurements. However, she is like me - short in the torso - so I am assuming I need to alter both front and back pieces as I would for myself.
I think you are right, and I should try and take small amounts evenly from the front. I also think I need to take a little bit from the midriff pieces to keep the proportions right.
I think I’m just going to take a total of 5cm out and then attempt to fix the rest at the toile fitting stage.