It's better to let roots develop a bit instead of rushing it. When leaves are as wide as the pot, typically okay.
Having a bunch of extra substrate that stays wet with no roots isn't ideal. doesn't speed anything up.
much better to keep the size of the pot and the plant appropriate so that you can water normally. fully saturate (plus, 10% runoff if soilless context), wait for enough dryback, and repeat. deviating from this causes needless risks and pitas to water effectively.
You might want to find a better intermediary step. That pot looks like less than 1-gal and going into a 5gal? or 3 gal? Use a 2.5-3" seedling pot, 1gal, then your final 3 or 5 gallon.. i use 5-gallon pots and use 1gals, but might buy 2gals if i did it over, but might be a tad on too big for that first transplant.
You don't want it taking 7-10 days between irrigations. that's jsut a lot of stagnating water in the substrate growing weird shit. Or, you have to water improperly because the plant is too tiny for the pot. Easily avoided problems that should never occur.