starting solids

FTM and constantly feel like I'm "winging it" in this motherhood journey. Haha. My breastfed baby is 6 1/2 months old and we've been introducing solids the past couple of weeks. He LOVES any and all food and would eat and eat and eat. My question is - how much should I be offering him a day? I don't want to wean him from BF quite yet but I also feel like he's much more satisfied when he gets a little more substance than just milk during the day.