Hi Lenka
My Coelogyne's shrivelled up a bit after i separated them, so i'm in a similar situation. I don't water mine more, but i put them in a mix that holds a little more water. I haven't noticed any real difference to the wrinkles either way after a couple of weeks.
With the propagation though, i know my Coelogynes need to have at least a few bulbs connected in order to spike. If you cut off bulbs from a branch, i'd make sure there's at least 3 connected together. - I've tried it with 6 including some leafed bulbs and they all worked.