Remember moves by attaching them to a reason and retrieving them from the position. In the London, developing Bf4 before e3 keeps the dark-squared bishop outside the pawn chain. That explanation makes the sequence easier to reconstruct than a bare list of squares. It also helps you recognise when a different move is needed because the opponent has created a threat.
Test yourself before looking at the answer. If you cannot remember, use a hint, examine the idea, and try again later. A revealed move is a study event rather than proof of independent recall. The daily trainer records assistance separately so that the position can return sooner instead of being treated as secure knowledge.
Space your reviews across sessions. Repeating the same line several times immediately can produce fluency that fades after you leave the board. Returning on another day gives a more useful test of retention. Mix a few related positions so that you must identify which branch you are in, rather than continuing a sequence by rhythm alone.
When you confuse moves, compare the positions side by side. Is the bishop already developed? Has Black played ...c5? Is b2 attacked? Those details often explain the difference. Keep new material manageable and spend more attention on the decisions you miss. The aim is to recall enough structure and concrete detail to make a good move under game conditions, not to recite the longest possible variation.
Try this at the board
From the diagram, explain why e3 is natural now and how its meaning would change if the bishop were still on c1.