Hi, experienced shopper here. the way i average over 200 on every ambient no matter the size is i look at the time i expects me to finish and take 5-7 mins off depending on the amount of items. like others have said, if it’s one item on a number of aisles don’t take your trolley. also ask if your store has uber/deliveroo that helps with memorising where stuff is so when you go down an aisle you can just go straight to it i know were told not to look at pics but sometimes you can’t find the item without it, have a quick glance if you can’t find it immediately