It isn't necessarily about fiber. I don't eat much because I've been trying to keep off all the weight I've lost over the past decade. Consequently I have a lot less volume to deal with so I don't poop much.
Same <1/day 'issue' here. Perfectly regular, just nicely consolidated~ ;)
The answer is yes, and since I always buy in bulk, I literally go years without purchasing more. I was running lowish, but even the few I have remaining should let me weather this storm.