Bizzy's first thought was mine too, 3.5mths is a very early start! If you think it's best for your baby though, I'd play it very lowkey for quite a while, ie. very small amounts and stick to farex alone for a bit longer than you might have if you started later. Pears was the second thing I introduced but we didn't start Bethany on solids until 5mths so I'm not sure how that would apply to you? Hope this helps