That’s right in many cantons the tax increases the larger the withdrawn amount is so for example two withdrawals of 100k each would be taxed at less than a single withdrawal of 200k and so for this reason the tax authorities seek to aggregate them and tax their aggregated amount instead of receiving a lower amount of tax on smaller amounts which add to the same.
Since you are withdrawing smaller amounts which may not make any difference for tax, it’s likely that the tax authority are not interested at all. However if you did want to break the tax progression, one way would be to withdraw from the pillar 3a in the first year and then from pillar 2 in the second year.