Feeling like a crap mom anyone?

Does anyone feel like they aren’t doing enough with their LO? I mean I’m home all day with him, I should be playing with him more right? And he should be more advanced because I can spend more time with him. But he’s almost 4 months and I feel like he’s not hitting enough milestones. My old boss had a little girl in October and she wasn’t rolling and sitting up by 4 months. And then I know some people are totally against rocking nursing babies to sleep and others are all for it. I nurse my lo to sleep for every nap and bedtime. And idk what the right answer is. I wasn’t him to feel safe and secure but I don’t want to make bad habits that I’ll regret later. And this whole mom thing is just so stressful 😂🙃