Solid starts have a bit in this article on how to get better positioning for your baby! https://solidstarts.com/the-ultimate-guide-to-high-chairs-for-babies/
@Lauren this is an amazing resource! Thank you xx
@Lauren that’s very true! Thank you so much xx
@Vicky you’re welcome! Xx
First time mom here as well. From what I was told as long as your little one can sit up on their own and you use the safety straps, the foot rest is not necessary. Most of these are built with your child's growth in mind, so they usually don't reach the footrests. My little guy has had no issue at all with not being able to reach his.