Question about losing weight

I've been vegan for 4 months now and I have lost 4.5 kilograms so far. I want to lose weight in a healthy way but I think I'm losing too slow. For those of you who have lost weight becoming vegan, how fast did you lose? like 1kiligram a month? or 3kg a month? I'm just wondering what's the avarege. I know everyone is different but I changed my diet drasticly and I have lost way to little.