I think a lot of parents today make it harder for themselves.
In my day, babies had a routine, but no busy timetable of classes/ social activities outside the home starting from birth.
Mine spent quite a lot of time outside in fresh air; walk in the pram, naps in the pram in the garden. Once they could walk, , playing unsupervised in the garden. By 7pm they peacefully fell asleep in their cot upstairs. Alone. In the dark. Around 11 pm before I went to bed, I woke mine for a feed and hoped they'd last another 4 hours. Mostly they did. Because back then, babies were used to being fed every 4 hours. (I know you'll find this hard to believe) .
Weaning was easy; from breast or bottle to some soft bland pap on a teaspoon. Baby rice, mashed banana, mashed veg.
If they had colic they got gripe water, If they were teething they got bonjella on their gums. If neither worked, a comforting dummy.
Babies wore baggy cotton clothing, pale pastel, boring, no logos or labels or colour co-ordination. I don't recall mums ever bothering to look what each others baby was wearing, or comment.
Around age 2, every child and their parents were only too keen to potty train and escape from soggy heavy cotton nappies. I never knew any 3 yr old still in day nappies.
No social media so no constant comparisons or fear of "judging" by strangers. There was far less pressure on parents because our social circles were pretty tiny, and relationships conducted face to face. With no multi=person back ground commentary on a screen.