What’s helped me is a combination of physical exercise (which helps against feelings of unrest that may be bothering me) and sort of sliding into the subject, tackling the easier parts first and from there riding the dopamine wave.
But yeah, it doesn’t get any easier.
Depending on how old your kid is, it might or it might not improve. The frontal lobe of their brain still has a lot of development left in children; right up until they’re about 25. This may improve things.
Also, please don’t be one of those parents who discounts meds. They can really help a lot. And no, they’re not addictive (in fact, people with ADHD are more likely to forget them than to use them recreationally).