As I recall you live in Jamaica? If so there is no need to wait to spring. It will take pressure off the mama. You need Maxi-crop. It is norwegian seaweed juice that is a root stimulant. Truly a game changer that all your orchids would love every 2 week. You will notice a change it the roots right away. All plants like it too. When you take it cut the spike very low. Use the spike to drive into the potting mix. The spike may need to be cut to be the right size for the pot.

I throw old canes on the top of some large potted 'dirt plants.' I have a pile of them. When they send up some leaves, I'll repot them or just leave them. I'll have to post a pic. I have some growing up a large Money Tree. Yes, I always root keikis on a piece of cane. I don't cut them off. Same with Phals, I pot the whole spike with the keikis.

I agree with Ben, Vandas tend to loose lower leaves as they age. Those smaller offsets will fill in the empty space nicely. Also what you have I would call a basal shoot, which is slightly different than a keiki. I would consider a keiki as a growth off a flower stem or an old cane. The growth is coming off a " dead end " on the plant so removing it won't effect the main plant. A basal off shoot is growing off the main stem so removing it opens a wound on the main stem and could hurt the mother plant. I hope that makes sense.

Where do you live? What part of the World? You need to give this info to have us help properly. If you are in a summer climate, cut off part of the stem the keki is attached to. Pot the baby in some moist sphag. You can turn the plant so the roots find the moist sphag. The new leaves will adjust to the position. Once cut the roots need to find the moisture. Don't worry about the leaves, they will grow in the right direction. I like to leave a piece of the mother stem attached, but it isn't necessary. Put the baby in a bright window or outdoors (if in summer) to grow. Jane