Thus, currently:
the SCO comprises eight member states, namely the Republic of India, the Republic of Kazakhstan, the People's Republic of China, the Kyrgyz Republic, the Islamic Republic of Pakistan, the Russian Federation, the Republic of Tajikistan, and the Republic of Uzbekistan;
the SCO counts four observer states, namely the Islamic Republic of Afghanistan, the Republic of Belarus, the Islamic Republic of Iran and Mongolia;
the SCO has six dialogue partners, namely the Republic of Azerbaijan, the Republic of Armenia, the Kingdom of Cambodia, the Federal Democratic Republic of Nepal, the Republic of Turkey, and the Democratic Socialist Republic of Sri Lanka.
http://eng.sectsco.org/about_sco/
Pakistan has put out "peace feelers" towards India.
Pakistan to India: Time to Bury the Past' for Regional Peace
ISLAMABAD - Pakistans military chief Thursday advocated a stable relationship with archrival India, saying unsettled disputes between the nuclear-armed South Asian neighbors are dragging the region back to the swamp of poverty and underdevelopment.
Gen. Qamar Javed Bajwa told a conference of experts and academics in Islamabad that their territorial dispute over Kashmir is at the heart of bilateral tensions and a lack of development in South Asia.
However, we feel that it is time to bury the past and move forward, Bajwa said. But for resumption of peace process, or meaningful dialogue, our neighbor will have to create a conducive environment, particularly in Indian-occupied Kashmir.
https://www.voanews.com/south-central-asia/pakistan-india-time-bury-past-regional-peace
The Shanghai Cooperation Organization provides a venue for further cooperation.
India, Pakistan, China to participate in SCO joint anti-terrorism exercise this year
https://www.thehindu.com/news/national/india-pakistan-china-to-participate-in-sco-joint-anti-terrorism-exercise-this-year/article34124222.ece