Breasting and solid food

My 7 month old started solids around 5 and a half months and took to them so well (complete opposite of my son, who was much more of a milk fan), she’s dropped so many feeds though and is now only having morning, 3ish(pm) and bedtime. Concerned that’s not enough for her age and also that it might be affecting my supply as sometimes she’ll only feed from one side. Does anyone else have experience of this? Really want to get to a year of breastfeeding her if I can!!