Agree with pretty much everything people have said on here!
I'm definitely not a perfect SAHM but what works well for me is up, showered and dressed before DH leaves for work so I'm not in a mad hurry trying to get ready with DS swinging from my hair / trying to steal my make -up!
DS naps in the morning so prior to his nap is housework and jobs time, and activities at home eg colouring, baking etc. Naptime I do any jobs I couldn't do while DS was 'helping' eg phone calls, I also prepare the veg for the evening meal so I don't have to do it later, and make DS some lunch ready for when he wakes up. Rest of naptime is for me to do what I like eg catch up on tv programmes
Every afternoon we get out of the house for something. There's a couple of regular groups we attend, the other days may be swimming, meeting friends for lunch, or going to Sainsbury's for the weekly shop. DS usually has a saved portion of whatever mine and DH's tea was the previous night, as DH gets home too late for us all to eat together
and it saves me cooking DS something separate.
Once DS is in bed I just have time for a quick tidy round and toys away, before DH gets home from work. We tend to chill out with a glass of wine brew together before I make tea, then he does dishes.
I love my days, I do think you have to be fairly motivated and routine-orientated to get on with being a SAHM - when I first started I would stay in pj's all day and accomplish hardly anything, but DS starts climbing the walls if he gets bored now he's older, it makes my life so much easier this way 