This is normal. Toootally normally. I could poop several times a day if I ate every meal. I only poop once a day since I started IF. Pooping every 2-3 days is also a normal poop schedule. It’s normal to poop less often if you eat less often.
First, congrats on losing 6 pounds! That is nothing to scoff at.
I have similar regularity issues since starting IF, but I just assume it’s because I’m eating less overall?
I think one thing to keep in mind is that you’re really not supposed to lose more than 1 pound a week, especially if you’re relatively thin to begin with. You’re averaging slightly slower than that but that probably means you’re more likely to keep it off in the long run.
We need to know exactly what you’re eating. And I don’t recommend store-bought laxatives; salt water flush is more natural, more guaranteed, and less likely to cause problems.
Given your very slow progress (very slow is still better than no progress or gaining weight) I recommend you eat less. Probably 1000 calories or less a day in a single meal, consisting of meat and veggies, low carb.