This week I have converted the blockout animation into spline after making changes in my blockout animation. The changes which George told me do in my blockout helped me a lot during my spline as I did not get any major issues in my spline animation when i converted it from blockout.
When I first converted the animation from blockout to spline I faced some challenges like the feet placement was not accurate and there was not enough movement in the heel part but those were just minor issues which I was able to fix in a short amount of time. After fixing these in the graph editor and cleaning the graph editor a little I was some what close to achieving the smooth transition between key poses and the realistic weight shift feel.