JAPS and Dubai Collage are the only two schools I would consider, If my children could not get into either of these schools I would NOT move to Dubai.
I agree that these schools are good, but your post is misleading as there are other very good schools in Dubai, so OP please don't worry if your child(ren) don't get into these. From personal experience and feedback from friends whose kids are doing very well or have gone on to have good tertiary education and careers, the schools they went to include, in no specific order:
Kings
JESS - primary and secondary
DESS
JAPS
The English College- primary and secondary
Dubai College - high achievers only
JPS - GEMS
JC - GEMS
There are also good non British Curriculum schools.
Safest and most comfortable way is to do it gradually. This is the advice I was given.
Gradually increase the amount of formula and decrease the no. of breastfeeds per day until you have replaced all breast feeds with formula.
Eg. substitute 1 bf with formula per day and when your breasts settle down (they will be full for a day or two until they get the message they don't need to make so much milk), then two feeds, then three feeds, etc.
Remember to stop formula when baby is 12 months old and give whole milk as a drink as solids will be the main source of nutrition.