low carb flour

Hi, I've not tried swapping almond flour for linseed before. What I usually do (as almond flour really expensive!) is use sunflower seed flour instead of almond flour. I grind sunflower seeds into flour in a small electric coffee grinder and use it like for like in almond flour recipes.

Hi,

Linseed/flaxseed is highly absorbent, and will suck moisture out of any baking mix.
So you may find that it works, once you get the liquid quantities right. Probably take a few test mixes!
Beyond that, I'm afraid I can't make any suggestions.

Are you OK with coconut flour? People who have problems with tree nuts can often get away with coconut, I understand. But having said that, I find coconut flour a very, um, all pervasive presence in cooking, and try to use it sparingingly.