There are original Laguiole knives available in smaller sizes. Instead of the usual 12cm you could go for 10,5 cm or even 9cm just check some French Websites. I‘ve got myself a Fontenille Pataud Le Pocket in 10,5 cm and for me it‘s just the size that fits.
I started the same as you with one in 12cm but that was a bit to much for everyday use. From personal experience I would say the 9cm would be ok if you have really small hands or for women (at least most have smaller hands than men). But it‘s not one size fits all and that‘s the reason these smaller ones are now available.
Gerd
I find that it fits my hand great. I usually wear large or extra large gloves. I carry the laguiole when I'm out in the woods (hunting, fishing, camping, etc) but not much at work or in public. Everyone at work is used to seeing me with a knife, but I still get comments like "whoa, big knife" or something if I'm using anything bigger than my opinel #7. I might carry it more often now that I have a peanut to pair with it for use around people.