how to change plans in dth as a black customer

[Stroov]

Hello everyone so I have a Airtel black plan and I have a 360 rupees tdh plan added in it now I want to change the plan to something that costs 300 rupees I looked at some of the plans on the app and none of them were interesting enough or had enough channels that my family or parents watch now I want to make a custom plan for us this will include some of the star in colours bundled plans that cost 45 rupees and ₹80 respectively and it will include the ₹153 minimum charge and I will add some channels as Ala carte show in total I am looking at star Sony colours zeetv all these four companies bundled plans then the I will add 10-12 channels Ala carte how can I do this easily on the Airtel app because it takes me a lot of time to even check the details of the plans that they have is there any 3rd party site that can ease this process for me