This is the first time that Sonakshi is going to IN without an invitation from them, while Dev is coming to Bose house with an invitation. Because Dev is a guest he is not supposed to be the one to adjust. He has to still be polite and mindful of Bose family, but majority of the obligation lies with the Boses. It is their responsibility to make Dev feel welcome and be more cognizant of his needs. If Sonakshi could throw him out of her room and Bijoy out of the house when Dev came there after bhaidhooj, neither of them can repeat that action.
In contrast this would be the first time Sonakshi will be going to IN uninvited. Sonakshi should be prepared to face Dixit family as one faces being an unwanted guest. She should be more mindful of their ways and cannot really insist about things going her way. The burden of accommodating lies on Sonakshi's shoulders. She will have to do something that she hasn't done before. She needs to be more of a Dixit than a Bose.
The costumes of both Dev and Sonakshi play a significant role in these times. While Dev has broken his ties with his traditional background, Sonakshi is holding onto it as though her life depends on it. Her Bengali roots has become the one thing she trusts truly, something to be with her at all times.
The CVs are also very clever that this whole idea of shuttling is given by Sonakshi discarding Dev's solution which was long term. In season 1, she mainly complained about Dev's temporary solutions to keep everyone happy. Here her Weekly rotation can no way be a long term plan. At this time is might make Suhana happy that her parents are together, that she gets to spend time with her family, i.e. Her daadu, dida, Golu etc. it might also make the Boses and Dixits happy that they still are in Suhanas life, but very soon it will difficult for everyone to deal with this plan. When Suhana is at Dixit house, she will start missing the Boses and vice versa. It is also the same for the elders to keep changing according tythis schedule of rotation.
I have really started loving KRPKAB more with all the analysis and observations and symbolisms. It is a pleasure to watch a serial of this kind where every single detail is taken into account and such layers of story is presented with such ease.