Femur, Precise nail, Post-op - lengthening questions

Hello,
Thank you all for sharing your experiences; very helpful. I had my femur surgery done, using precise nail 2.0, about 4 weeks ago. The goal is 2.5 inches. The surgery went well, not that painful, but during the post-op and lengthening, I'm facing a few challenges with left leg being super tight and somewhat numb. I'm around 18mm so far. I have a few questions, and am hoping those who successfully navigated this can share their experiences.

Questions:
1.  Did you do any set of exercises before and after each ERC lengthening click? Also, did you apply ice each time after the ERC/distraction?
2. How did you space out the ERC clicks, how many hours apart and when is generally your last ERC click. I'm doing 1 mm each day.
3.  At what point were you able to turn on your side? A couple of times I tried it, it was painful in the incision area, and I could not roll around.
4. At nighttime, on the left side, I'm getting this weird cold sensation at the incision area on the left, it only happens at night.
5. I'm still getting used to finding a comfortable position to sleep at night. Since I can't turn around on side, I feel stuck in one position all night and it becomes uncomfortable. Are you using any elevation under the knee or calf at nighttime? The PT mentioned not to use any kind of elevation under the knee, but I read in some of the discussions that it is recommended. 
6. My left knee pops (once every session out of 20 reps) when I raise the left leg up in sitting position. The doc said X-rays look good, but be watchful. Did you guys go through this, and when did they decide it is IT Band? PT mentioned about it, but they are watching.

Thanks for your help.
Ogmav

ERC "click" - I meant the lengthening with the machine, 0.25 mm

UnclE,

Thanks much for sharing your experience, much appreciated. A couple of follow-ups.
Meds: I'm taking Oxy for pain relief, but for some reason, none of the muscle relaxers actually helped. Were you taking the muscle relaxer soon after or prior to the distractions? I have not tried those ones you mentioned yet.

Turning on side : would you mind posting amazon link to the pillow?

I'm getting a recumbent bike to help stay active, and also do this prior to distraction, so hopefully it will help relieve some of the stiffness and pain.