Another method to give meat to baby is using food maker set (食物磨研器). No need electricity. You can buy from jusco, seiyu etc. It's about $100 depends on the brand. I've bought Piegon which is very good.
Just take out the meat from congee after done. Then use the 食物磨研器 to grind the meat until very smooth.
Use food maker can grind very small amount of food and can
avoid wind. ( the food after blending are full of air bubbles which will make baby windy ) Have a try.