We didn't start solids until 6 months with all my kids. Its now not recommended before then and finally all the baby food companies are changing the age on their labels. I was also trying to delay it as I knew how busy it would become and with the other two boys its like feeding time at the zoo.
I am breastfeeding so when I introduced solids, it was after a feed. I think I did that until about 9 months. (another here that has mush for brains and can't remember). I am pretty sure it would be the same for bottle-fed babies.
I would have never thought to use two bowls and spoons. I just make sure the one bowl has more food than usual in it. My twins are starting to feed themselves atm, so I now give each of them a small amount of food in a bowl with a spoon, but I still do most of the feeding in between them playing with it.
It is alot more satisfying feeding twins as its pretty constant. By the time you spoon it into one mouth, the other one is ready and waiting. Not like with singletons, you have to wait until they are ready.
Good luck
Dolph
Mum to
DS Bailey 6
DS Jesse 3.5
DD/DS Summer & Taylor 1

Step-Mum to Elodie & Brooke