Folic acid and iron are both important as you plan pregnancy, so it's good you're thinking ahead. The exact switch and timing between this tablet and folic acid depends on your current iron and
B12 levels, best checked with your doctor.
Next Steps
Ask your doctor for a repeat blood test before you start trying, so the right combination and duration can be planned for you.
Health Tips
Given your earlier miscarriage, please don't self-adjust the dose; a preconception check-up can also flag anything else worth addressing first.