I feel like a shit mom. So my son is 4 months old and HATES tummy time he will hold his head up but doesn’t use his arms to hold himself up and push. I know he can do it because I’ve seen him do it while he’s sleeping on his belly lol it’s weird I’ll think he’s awake nope just pushing himself up lol. He also can almost sit up without being supported he can roll from back to his side, he always gets stuck on his arm to go all the way. And when he his sitting his head is almost completely stable. I’m just worried I haven’t done it enough now he’s going to be behind on things, how important is that skill when he’s doing all this other stuff.