my indoor orchids, i just put it where there's lots of light and they're happy. i have them in my garden window in the kitchen now and they've been happy for a couple of years, give me flowers a couple of times a year. so many flowers that i've even gotten bugs, so i gave away one pot to my sister-in-law (that pot had 3 stalks of flowers last time it flowered).
i only repot them when the pot it's previously in could no longer hold them; looks like it's going to topple over from being top-heavy; plastic pot being split opened by being too full. once you repot them, don't expect flowers for at least a year cause they normally only flower when they're crowded (happy). also i repot them whenever i have time, doesn't matter what time of the year. once you get used to them, they're really easy to grow. don't require too much attention. i only water them once a week or if there's lots of sun, twice a week. fertilize when i think of it, but they flower with just water sometimes.