Starting Solids

So I know everyone now recommends that you wait to start solids until six months, but lately Clayson has been blowing out of his diapers at least once a day and often times more. I've tried different brands and different sizes of diapers and nothing seems to help. A few people have told me that once you start solids it's usually not as bad. Clayson's pediatrician said it's fine if he starts single grain cereal especially since he's such a big boy. I was still planning on waiting til six months, but after he pooped all over three times in about six hours I decided it was time. He did really well. He swallowed more than what ended up on his face. He only took six or seven bites and then he was done, but I thought it was really good for his first time.