Loan Taken Out But Not Disbursed Before July 1

Hi everyone, I’m a grad student and I took out a loan to pay for my school fees this year (25/26). My school does it in installments, so even though I’ve requested a specific amount, only X amount of money is disbursed every term. I think the last disbursement will be in August, so does that count against me for retaining IBR? I graduate in June 2027 and my parents are paying my second year fees. Thanks!