Agreed - it’s pointless doing 100 jumps is 90 of them are GCT of 0.35+ and only 10 of them are around 0.25
It’s time to stop at 10 - or lower the height of the hurdle to reduce GCT - Or do 5-10 sets of 2 hurdles and slowly work up from there.
As CF used to say, It’s time to stop when the Quality stops - if not sooner