Totally the same problem here. I didn't have a problem moving on from Shizune, because her route didn't feel very deep. She didn't really love Hisao back, I felt like, and the future it left at the end was week ("I'm going into business, I'm sure we'll all meet again someday...later!").

I had to give myself a bit of time in between routes to get ready for another. I think I ruined Rin's route for myself though, didn't give myself enough time after Lilly (my fav), so I didn't really give her a chance as I was reading. And it was my last one, so I was sad about being done and left with no more KS :(

itsaterribledayforrain.jpg

like for me, i started with emi and now im on the hanako path, the part that separates their paths is at that moment at the track with emi.