helping baby sit up??

Shannon • Mommy to the most perfect and handsome little boy, Grayson Alexander💙 11.10.2016
What are some ways that you are helping your babies to learn to sit up on their own?? And is it helping?? My son hate being propped up to sit by himself! Like if I put him in the bumbo he is fine or if he's in my lap but as soon as I try to sit him up on the ground by himself he stiffens up! He is going to be 5 months on the 10th!