So my son is exactly 6 months today, and does not like tummy time. It's probably my fault for being scared as a first time mom and not starting it early enough. He's hit all his milestones, yet I still find him a bit "lazy" during tummy time. He'll reach for toys when standing or sitting, but doesn't during tummy time. He's rolled a few times from tummy to back and has rolled from back to tummya couple times, but doesn't do it on a regular basis. He can sit for long periods of time by himself, or even stand for a few minutes holding onto the coffee table, but still doesn't seem to want to be mobile or do much playing or anything on his belly. Anyone else's babe similar?