Nse! You’re welcome. 
Haha! You know what? I haven’t paid much attention to if I’ve heard others use it or not. lol! But, some have said my Bambara is American Bambara. 
And, my Southern drawl sho ain’t helpin’! 
The usage is more of a personal decision for me on my speaking journey and I thought that I’d share it. I was having a REALLY HARD time with speaking. So, in order for ME to speak with more ease, I decided to dismiss literal meanings and drop all of the linguistic jargon for a while (no offense 
) and just focus on practical communication and immersion. My goal is to simply speak… and to, obviously, eventually arrive to a fluent speaking level. So, if it has the same contextual meaning and the understanding is there… I just say it.
“At least” is a common phrase I use when speaking English. So, it’s all about me wanting to express myself in the most familiar speaking manner. It doesn’t always work… but, I’ve found that that’s a suitable learning style that works better for me. I’m learning to speak better through decisions I make for myself like this… and my brain is more at rest… and my speaking is significantly improving because of it. 
“Dɔgɔ” also means “little” and, depending on the context, “least” is the superlative form of it. That’s why I use “a dɔgɔya la” to say “at least”. I mean, what is the point of knowing how to properly construct a sentence/phrase if I don’t actually apply it? 
After all, comparative and superlative constructions are typically introduced at A2 level anyway…
Cogo o cogo, it’s a continued learning curve for me for sure! But, I’ve gotta start somewhere. And, for now, it’s all about NOT having to struggle with word retrieval. 
PS: I do get my Bambara corrected from time to time. Although, not as much as I’d like for it to be. And, I do very often humbly ask if how I’m saying sth is correct and/or if it’s being understood. 
PPS: Here’s a different sentence example for @marija.
Ni week-end sera, n bɛ tile kelen à dɔgɔya la tiɲɛ ni n cɛ n’a denmuso fitinin ye.
PPPS: Maybe this could be a new video topic for you @Coleman… on comparative & superlative constructions… or an addition to your Bambara course if you haven’t already added it.
Happy learning! 