Q. Is there any way that I could manage this myself?
A. Yes, probably. The TurboTax (TT) software is capable of handling this. But there are some complications. This forum can provide some help. Some paid editions of TT come with live support.
You handle this by filing amended returns for back years to report the taxable portion of the scholarships.
How to amend https://ttlc.intuit.com/questions/1894381-how-to-amend-change-or-correct-a-return-you-already-filed
Scholarship income is treated as unearned income and some of it may be subject to the "kiddie tax", wherein a portion of your taxable income is taxed at the parent's marginal rate.
But scholarship income is treated as earned income for purposes of calculating a student-dependent's standard deduction, so you will get the full standard deduction ($12,400 for 2020).
In addition to tuition and fees (the 1098-T box 1 amount), books, other course materials and computers are also qualifying expenses for some of the scholarship to be tax free.
The IRS has installment plan payment options. The TurboTax help topic at this link explains how to set up a plan:
https://ttlc.intuit.com/community/tax-payments/help/can-i-set-up-a-payment-plan-for-my-taxes/00/2651...
