I think the idea is that food isn't mean to replace bm or fm at that age. Tbh by the time I started weaning, my son had very rarely gone 2 hours in the day without a bf so I just worked out when his 'best' feeds normally were and avoided those times. I completely demand fed though (easy only worked for us at around 9 months plus). That all said, despite everything, it all worked out in the end.
Bear in mind too that when your baby is a toddler, they will probably have 3 meals and 2-3 snacks a day! This is why I'm never sure about 4 hourly feeding patterns, very few toddlers ime go 4 hours without feeding.
Anyhow, I'd use her words as guidance but find a pattern that works for you both.
