What do I put in HBP section for "annual minimum repayment amount" if I withdrew this year and am not planning on paying back until 2020? (Have no NoA with information)

I had selected at the start that I had withdrew RRSPs in the year with the HBP and that I didn't need to make repayments.

I withdrew $25000 this year, so I thought I would put $1666.67 as the minimum (25000/15). But the RRSP summary page makes it look like i need to be repaying that amount this year, but I don't need to pay that amount until 2020. Should I just put $0 instead?

I don't have a Notice of Assessment with this information as I just withdrew it this year.

What should I do?