We have seen this a dozen times and they always returned back to where they started. They are probably doing this to reduce viewership to selected channels. Audio sync issues, placing channels at worse slots and finally removing them only to be brought back again after some time.
Yes, there is no hurry it seems. Until Zee pay channels such as Zee Studio and Zee Cafe are a part of Analogue there seems no urgency to go DAS.
And only when they remove Sun network channels from Analogue we can make sure they are really ready for a DAS switchover and that seems not to happen in this millennium.