Did that with my kids
Pnewmomcocal at about 6 weeks.
Tdap at 3 months
Polio at 6 months
Second Tdap at a year
Polio and tdap followups at 18 months.
and any other followups the following year.
and nothing else.
All had chickenpox.
One had an MMR and reacted badly so no MMRs
Healthiest immune systems in the doc’s practice.
None ever needed an antibiotic before age 8 or 9.
One had an ear infection once that I treated with warm olive oil and heat.
Doctors don't know everything, but parents blindly follow their instructions. Be wary and question everything.
Our oldest child got chickenpox. Her pediatrician after diagnosing it said once over it, she will never have to worry about it again. So a year later, she got chickenpox... again, diagnosed by same pediatrician, who said "Huh!". Yup, you can get it again. That doctor was the chief pediatrician in SF and head of the SF Health Commission, the go-to guy. Even the experts don't know everything.