That constant reassurance will help a lot...

Somethings that were problems for me not sure if they would be the same in your situation - most are preventive in nature...so I'm not sure I'll be answering what you are looking for...

1. Try to always be on time - being late was a big problem
2. Try to avoid making sudden changes in plans
3. Can't seem to think of any more at this time.

Having said that...you can't walk on eggshells all the time...

Probably best to preplan senerios that deal with changes and being late - it is unrealistic to think things won't change (except for me of course)...

There is more - just wanted to see if I'm helping...