Your second sidehop is too late. After you throw the deku nut, you want to go -move a little->sidehop->move a little->sidehop and it all needs to happen before reaching the hump. Also don't let the camera pan out when you're at the door.
Don't sidehop onto the ramp on the floor. If I remember this setup correctly, you want to sidehop left twice BEFORE you reach the ramp, but not onto the ramp or it screws up the timing. Also, you MIGHT be throwing the nut slightly early. I believe this setup has a 5-frame window with different adjustments for each frame. You might be one frame early, but I can't really tell.
It is a 4 frame window with the same adjustment each time, though I think there might be an adjustment for a 5th frame but I don't know it. As long as link's back slides against the back wall while going over the hump, it should be within the 4 frame window.