edksd,
in the beginning there were quite a few days when Trinity was sleeping and I didn't have the heart to wake her up and bring her to MIL's place. Ended up taking last minute leave or arrive late at work. However, already kenna from boss on this, so now no choice will have to wake her up to bring her over.
As its winter now in HK, we will have to change her from home clothes to outdoor clothes and the fussing will definately arouse her from sleep, but I take the chance to feed her breakfast too. The good things is after the feeding, she falls asleep again easily in her stroller.
As for bedtime, I used to work really long hrs, but now will try to rush back to MIL's place no later than 8pm. So i can have dinner there and have Trinity home by 9:30. Afterwhich she will have her bath, massage, supper and then bedtime at 10:30. If HB is working late, I'll bring her home by myself without waiting for him so that we don't have to postpone her bedtime.
Do you have a stroller or babyseat that you can use at caregiver's place? Is it possible do like what daisybutton suggest, set a bedtime routine (eg. bath, massage, reading, feeding, etc...)and set a time for it to happen. In case you have to work late, ask caregiver to start on the routine at her place and place Kai in the stroller/baby seat to sleep when its done. This way, when you go fetch Kai you won't have to wake him up and just have to transfer him to his bed when you reach home and his routine is not distrupted by your late hours.