What does your child go back to without being asked? Dinosaurs at breakfast, songs in the car, puddles after rain. That is the spark.
The free observation sheet gives you three simple prompts: what they return to, what they wander off from, and where their strengths show up.
Jot a line or two a few times a week. No scores, no judging. At the end of the week, read it back. You will usually see a pattern.
Then pick the doorway that fits, and let the next activity start there. Learning goes further when it starts with something they already love.