Student Loan write off question

[Mr Ponkerson]

Hi there folks, have done a bit of googling but can't find an answer for my question:
I have student loans dating back to 1996 (and for the following 3 years), the mortgage style ones now owned by Erudio Student Loans. By my calculations they should be written off in 2026 or 2027 (have been deffering them every year until this point as I earn under the threshold for repayments).
My question is, does this write off come in to effect whether I have started repayments or not I.e. if I start paying them back, does the remainder get written off, or once I start do I have to complete the repayments?
I have a feeling I do, but just curious.

[Drumroll]

My understanding is they start from when they were taken out.