Yours Christmas Cactus is beautiful. I have a Thanksgiving Cactus - purple flowers - and an Easter Cactus - red- that blooms in March or April. I've heard that you can change blooming time by changing when you WITHHOLD water and/or put it in a dark closet. I NEVER move mine, so I haven't tried the dark closet bit. Don't know anything about doubling blooms. When I get back to CT, I'll take a picture of mine when it's blooming. Both were started from stubs - the purple one from a friend whose plant is 50 years old; the red one from a stub that fell off a gift I was giving to another friend! They're amazing plants. You just about CAN'T kill them!