You shouldn’t start to wean until they have full head control (due to choking). Occasionally gp’s will give the go ahead for 4 months (usually due to severe reflux) but otherwise it shouldn’t be before 6 months and even then you want to start with green vegetables
It's totally fine to give them tastes of things but I wouldn't wean them until at least a year. They will still need the nutritional benefits of breastmilk.
I started at 3 month , what was done with me and I felt it was right x
We got the go ahead from our pediatrician to start some purées or cereal at 4 months
3 months is a bit too early, I have heard of of 4 months before but it should really be 6 months as advised by NHS