Ok well,Ive been doing Judo for a few mounths and I can tell you it can appear to get harder,as time goes on.Also you may feel like you are getting worse. Just keep at it,be tough and you will reap the rewards. Its tough,you have to fight against a fully resistant opo and you will be thrown about alot. Thats the beaty, Judo does not lie,no false impressions of what you can and can't do. Personally I feel the hardest part for me at the momment it learning how to fall,its just takes practise and time and confidence when falling will incraese and faer of it will decraese.
Have fun :-)
"The deeper you delve into philosophy the sadder you become."