I often see memes about how large the vaccine schedule has become, but the actual antigen count of vaccines has decreased significantly over time while the number of vaccines has increased. Children are exposed to infinitely more antigens in their daily lives than what they are exposed to in the vaccine schedule.
In any case concern over the number of vaccines is misplaced panic. Children's immune systems can safely handle vaccination with multiple vaccines. You won't overload the immune system. Vaccines are specifically tested in this regard to see how they react in co-administration.
Delaying the vaccine schedule on the other hand is risky as it leaves children exposed to pathogens that their age group often is particularly exposed to and vulnerable to. The vaccine schedule is specifically designed to protect children optimally and reduce that window of vulnerability.