Regarding input tax credit (itc) claim in gst

Madam, I am working in Management(Trust) running 9 educational institutions (4 Colleges and 5 schools up to 2nd PUC) & registered under GST and some of our schools and colleges providing services and for such services we are collecting GST and remitting the same to Government. Now my question is wether we can claim ITC of all 9 instiutions purchases of goods and services and adjust our output tax liabilities arising from service providing activities of 1 college and 1 school. I mean 2 institutions output tax we are paying and wether we can take ITC of remaining 7 instiutions because all 9 institutions having only one PAN Number which is in the name of Management and GSTIN Number for all 9 instiutions are same. When Filing GSTR 2 (inward supply return) Return I observed all 9 institutitons purchase details are visible in auto drafted GSTR 2A to us by details uploaded by supplier from whom our all 9 institutions purchased goods and services and we have to confirm these purchases to file GSTR 2. Without accepting/confirming these purchases, GSTR2 won't be submitted (error message shows to accept auto drafted b2b supply details uploaded by supplier). If we confirm these supplies, GSTR 2 succesfully submitted but it results ITC of all 9 institutions purchases are summed up and credited in our Electronic Credit Ledger which is correct???. So wether we are eligible to claim the accumulated ITC of our all 9 institutions? please suggest Madam,