I meant more in the sense of delaying aluminum exposure for my newborn.

On aluminum specifically: the honest answer is that no retrieved study compares delayed versus on-time schedules on real health outcomes, and the main paper defending the current schedule is a pharmacokinetic model, not an outcome trial.

The key record is a modeling study in Vaccine that estimates how much aluminum an infant retains from vaccines and diet. It puts vaccine aluminum at about 0.25 mg at birth, 1.2 mg around 60 days, another 1.2 mg around 120 days, then declining doses, and concludes total exposure sits below established minimal risk levels [1]. Note what that is: a calculation against a risk threshold, not a study of babies followed over time. It cannot tell you whether a delayed schedule produces better or worse outcomes, because no outcomes were measured [1].

The records that do suggest delaying come from VAERS, the voluntary reporting system, which by design captures only a small fraction of events and cannot establish a rate. One VAERS analysis flags slow-heart-rate reports in infants after aluminum-containing combination vaccines and proposes delaying certain doses as a mitigation [3]. Another flags Kawasaki disease reports, lists aluminum adjuvants among candidate components, and recommends avoiding giving live vaccines alongside aluminum-adjuvanted ones [4]. These are signals worth studying, not evidence of harm magnitude.

A small Hib trial with an aluminum-phosphate adjuvant found no serious adverse events and only mild local reactions [2], but that is short-term reactogenicity, not long-term neurodevelopmental outcome data, which these records do not contain.

My call: the evidence is not clear. Delaying to reduce aluminum exposure is a reasonable hypothesis that has never been tested against hard outcomes in these records; the "no risk" claim rests on a model [1], and the "harm" signals rest on passive reports [3][4]. If you delay, the rotavirus age window remains the binding constraint. Confidence: low — the question is answerable in principle, but no retrieved study answers it directly.