As for the guidelines; they arise from the 'new' idea that breast feeding is best for the child and our generation were conned by the dried milk industry to thinking that a bottle was more modern. I fed my 46 year old daughter on egg yolk at the age of 3 weeks and now she has got an egg allergy! She is a modern midwife and I didn't dare tell her that the egg allergy was maybe my fault as I was innocently following doctor's orders.
The DIL problem is very diffcult. My daughter married her schoolboy friend from down the road. We MILs are friends now and I found it difficult knowing both sides and sometimes things were tense until my daughter did behave badly to me. I went home and awaited an apology. When I criticised my DD her MIL stuck up for her! Since that day we have found a way to openly discuss the tensions which arise from DILs From my side I have her son as my SIL and we have no problems. It is different with sons and always will be.
Estranged Son and Future Granddaughter
To think that London, or anywhere else for that matter, does not belong to any one demographic