I slow-boated the vaccines with the most important first. which was the pneumonia, then polio, then MMR. Took about 5 years to do the two year stretch. No chickenpox, no social disease vaccines, Just the basics. Lots of time between each one.
From all I’m learning, spacing out vaccines is a really smart way to introduce them. Today the CDC recommends 21 to 23 vaccinations by 18 months which, when compared to schedules 30 years ago, is hundreds of times greater.