Baby steps. They also recommend having at least half of the grains in a diet be whole grains.* For the best diet, both of these proportions should be as high as possible in most cases.
[0] https://www.cbc.ca/news/health/pizza-still-a-vegetable-for-u...
Real fruit juice is very much different from soda pop.
25g of sugar in 285g of juice[0] = that's 37 grams in 355ml of juice[1] vs. 41 grams of sugar in 355ml of soda[2], which is 110.8% more than the juice[3].
The half gram of fiber probably makes it little better, but it's still a very sugary drink.
[0] https://www.wolframalpha.com/input/?i=fresh+apple+juice+nutr... [1] https://www.google.com/search?q=25*(355%2F240) [2] https://www.pepsi.com/#!products/pepsi [3] https://www.google.com/search?q=41%2F37
I found this that seems like what the doctor said, but I'm not sure. Click on 'transcript' and read it.
https://nutritionfacts.org/video/if-fructose-is-bad-what-abo...
Edit: Other than this, fresh fruit juice contains minerals, vitamins, antioxidants etc etc.