Nah, very unlikely that you will experience withdrawals. While kratom works differently at the opioid receptors and doesn't fully recruit the receptors, it is still dosage dependant until a very high dosage. Higher dosages are increasingly sedating and feel similar to morphine, around 20-30g is what should do the trick, but start with 5g and titrate up cuz its safer. However the problem with higher dosages is that they make most people jittery and are hard on the stomach.