Weight Bearing

I’m ending week 8, NWB all along with 6 weeks in cast and 2 weeks in boot. Very conservative I know. I’m just starting PWB but found it difficult to apply even 15%-20% of my body weight (95kg). Although it’s day 1 of weight bearing, I was expecting to be able to handle more. My calf literally disappeared which is not helpful either. I still have swelling on my foot which restricts ankle movement and any weight bearing attempt adds to that swelling. I feel very down, hope improves, any advice?