FTM too, here’s my experience so far with my 10mo
1) 3-4days seems to be ok for our steamed salmon and vegetables
2) we started with 3 tablespoons (gerber organic oatmeal with formula milk) and one meal a day
3) for us, yes, I feed solid to my baby one hour after milk
4) yes, now we are having 2 meals of fruits and 1 meal of protein food. You will be able to tell how much to prepare as time goes