Hi!!!
I flew from Australia to Spain when Ds was 6 weeks old.Been he was young,he did have jet lagg,and didn't sleep much in the first 2 days,so if that happens grab what sleep you can.Ds also had trouble with wind so I think that contributed alot to jet lagged too.But once we got over it,Ds went to sleeping the whole night thru.
When Ds was 9.5months old we flew back from Spain to Australia,and jet lagged hit them bad,but they were sick too.
I am personally not doing a routine while I am in Australia but that is cause I don't want to be tied to the house while I am here as only here for a short time.
The only advice I would give you,is if you want to stick to EASY try not to plan it too much,in case it doesn't happen,which is what happened to me.
Good luck with your flight...
Andrea...