What is BCCI doing to strengthen the IPL 2021 bio-bubble?

After five players pulled out of IPL 2021 amid COVID-19 crisis in India, BCCI has taken some steps to strengthen the bio-bubble. Players will now not be allowed to order food from outside their designated hotels. Further, coronavirus tests will be conducted every two days instead of five. Also, the BCCI has asked Indian players to get vaccinated from Saturday.