Zahra,
It is o.k to cut the pill into two and use half now and half later. I know for sure. In fact, I suggested, in this forum, splitting the dose in two, when my doctor suggested this to me stating it is better for 24 hour chelation. It seems lighter for the stomach,too. We have members in this site who adopted the dosage splitting and their kids accepted it better than the one dosage effect.
Pity your doctor does not prefer ferriprox as it is very good medication,too.
Good luck,
Lena.