His ex-wife.
I’ve grown in three-gallon pots with no real issues before, did it for a few years before I switched to five-and seven-gallon pots. Isn’t The Rev’s soil mix kinda specifically FOR two- and three-gallon pots? I know there’s a ton of different amendments in it (most of which are redundant). I don’t think you’ll have any issues in a three-gallon pot. Might just have to top dress a few times in flower, maybe.
Here’s a Strawberry Headband grow log: Greenhighlander grows
You can always use the search bar in the upper right-hand corner.