If you look at minutes played Doolittle played 7 minutes against NW State, 7 against Northwestern, 0 against TCU in Fort Worth, 10 against OSU, 14 against WVU, 21 against Tech and 22 against TCU in Norman.
Comparing his first 4 games back to his last 3 and his minutes are up an average of 13.5 minutes to 19/g. Odomes minutes are also up 7.9 minutes for the same periods. Those minutes are primarily being taken from Freeman -6.6 minutes and McGusty -6.7 minutes.
I take that as moves to strengthen the defense as we get further into the Big 12. Although Doolittle did lead last year's team shooting 40% BTA on 17/43, leading returning FT shooter at 81% on 93/111 and was had only 1 less RB than Lattin with 193.
http://soonerstats.com/basketball/men/seasons/team-stats.cfm?seasonid=2017#.Wlt88qinHIU