Input tax credit for import

I have paid IGST against import of goods

also paid:

a. ocean freight to shipping company in india + CGST + SGST

b. other charges related to import +CGST + SGST

c. Local Transport charge to my warehouse from port + CGST + SGST

My queries:

1. Can i adjust excess amount of IGST credit with CGST & SGST payable for that month as well as next month

2. Can i claim ITC under a/b/c above charges with CGST & SGST???