Retirement tax questions

is the sequence of conversions important? I am in somewhat of a similar situation, although my spouse had some amount from a deductible IRA in 2012-14. We just converted it in late 2024 (moved money from traditional IRA to roth IRA), then started backdoor after that conversion towards EOY 2024.  So once the first step is done, does the situation become cleaner? (meaning we owe tax only on the first conversion?). Thanks!