My baby has also just started on solids (6mo) and I do not intend to decrease milk feeds. Solids are complementary and milk is still the main source of nutrients until 1 year old.
However, if you really feel tired, then perhaps it's better to substitute with FM. Some moms replace 1 milk feed with solids (puree, porridge) but as I'm doing BLW, the milk feeds remain as per normal.
http://www.bounty.com/baby-0-to-12-months/weaning/how-to-wean/cutting-down-on-milk