GPP Hill graph

Approx. how many weeks is it common to stay with the Sat. hill work? My guys have just completed 3 weeks(11 total weeks of training) of 4 x 80. We have our first meet on Dec. 5th and they have yet to do any longer split runs as in 1+1+1 etc. and I’m thinking we need to get out of str. end and into the longer split runs but I’m not quite sure. We’ve been going with the incomplete recovery 60’s on Wed. up til now.