Hello, I’ve been on IBR plan (need to renew by october) with monthly required payment of $0 but I ve been paying $170 monthly instead. I’m thinking about changing to extended graduate plan which is also $170 for first two years but I wanna ask.

1. With overpay of $170, I’ve noticed that the payment was being applied to both interest and principal and it shows online that I have $90+ of accrued interest left as of right now. I heard so if I pay off this interest and change the repayment plan to extended graduate plan, will the future interests being accrued still be capitalized from that point on? If so, is there a way to avoid such situation?

2. Any other downside to leaving IBR in my situation? Like any effect for eligibility for 25 year repayment or anything?

3. Is it possible to leave IBR and if I change my mind in the future, apply again?

thank you