Hope you are well...
I returned last week and had the best time, wish I didn't have to come back haha.
The sumo practice was really cool to watch. It went for about 2 hours, where myself and afew other people got to watch about 8 Sumos do some stretching which led to them having practice fights 1 on 1. Afterwards we were able to take some photos which I'll attach the one I had done. The location of the sumo stable wasn't too far from my hotel and was located in the main sumo district of Ryogoku.
Thank you once again for all your help and I hope to travel again soon to Japan.