I know it's tempting to put them into a bigger pot so you won't have to repot so often. This is one temptation it would be better to resist.
Settle the plants into their new pots. Put more media on top of the roots. Shake the pots and bang them on the table to settle it. Use your fingers to push the media into any empty spots. Shake off any excess.
Place the repotted orchids into the shade and wait at least a day or two before watering them.
The roots have just been soaked in water and the new media is damp so they shouldn't need it. If you water them now, you risk washing away the fungicide and exposing them to rot.
Caring for orchids offers instruction on how to grow orchids to beginners as well as experienced gardeners. Includes growing orchids indoors, orchid propagation, raising, pruning and repotting various types of orchids.