I never really moved up from about 20 carbs/day, but my weight loss slowed down in about week 3. I think that's normal from a lot of posts I've seen.

You might also need to be attentive to the calories,
though everyone says they don't count them, I do.

ANyway, I think that right now, your weight loss is fine, adn you've just hit the typical 3d week slowdown.