4-7 months the average, but babies do not learn to sit up all on their own. You need to help them! Prop them up in a boppy or hold them in your lap with as little support as possible.Sit them up in shopping carts and encourage them to hold on to the front for balance instead of leaning back.eport Abuse. 4-7 months the average, but babies do not learn to sit up all on their own. You need to help them! Prop them up in a boppy or hold them in your lap with as little support as possible. Sit them up in shopping carts and encourage them to hold on to the front for balance instead of leaning back.
He's fast become one of the most charming voices on the Internet. I must know: Who's the writer behind Karl the Fog? to wit: Karl The Fog Explains How He Got the Gig as San Francisco's Fog.
Karl Martin Sandberg (born 26 February 1971), better known as Max Martin, is a Swedish songwriter, record producer and singer. He rose to prominence in the second half of the 1990s after making a string of major hits for artists such as the Backstreet Boys, Britney Spears and NSYNC.