charitable trust - return filing

hi, I had filed the ITR of a charitable trust for AY 2019-20 on 30.10.2019. But I had not filed the audit report in from 10B. Also, the amount expended during the year was less than 85%, so i also had to submit form 9A, which is also not filed till date. Please help regarding: 1. Can I file form 9A and 10B today and then revise the ITR. 2. Anything else needs to be done in this regard.