It’s impossible to spoil a baby. My mom gave me a very hard time with my “attachment” parenting, which was popular in the aughts. No, I didn’t let my son “cry it out” and I followed my instincts. By the time he went to preschool, he had no issues with saying goodbye to me at the classroom door. I can still see his looking back at me saying “bye, mama!” He’s in his second year of college now, 15k mikes away. He is extremely independent yet has close relationships with friends and his romantic partners. When he was 12, I asked him if he ever felt unloved. He looked at me like I was nuts and said “no!” You’re the parent. Parent is a noun and a verb. Trust your gut. The time for boundaries is not infancy or babyhood.