Definitely follow your pediatrician. My BFF thought 6 months but pediatrician ended up having them start at 4 months as she was developing faster, teeth came in early, etc. So know every baby is different and though we can all tell you "standards" it will depend on your baby. :)

I will tag you in a very informative post

Dr will tell you when you can start. Once you start introducing its best to start with one, like say mushed peas, so if there’s an allergic reaction you know what from.