I am also a SAHM and my daughter has been on a schedule since I was able to get her on one (probably since around 3-4 months old....she's 2 now, so I can't exactly remember). I think it is so important for them to be able to understand what is coming next in their day. Try to get up around the same time every day (we get up between 7-7:30) and then have some activity in the morning. Make sure you take some time to play with him and interact. Or, join a playgroup, go to the library for toddler time, etc. At 11 months, my daughter was still taking 2 naps per day, but in order to get him to take one good, long nap, you may want to put him down around noon or so for one nap. If you wear him out, he should sleep for a couple of hours.
As for the night waking...at this age, it's probably more of a habit than a need to eat. You should try letting him settle himself back to sleep. It won't be easy and there will be some tears (probably from you too), but if you ever want him to sleep through the night, you have to let him learn to go back to sleep on his own without the breast. If he's waking that often, he's probably just snacking anyway and not getting a full feeding, so at that point, it's not doing him any good anyway other than keeping you all up. Is he eating solids yet? If not, you should give that a try so that he is getting some calories during the day and learning to eat something other than breastmilk. In order to wean him from the need to nurse to sleep, you should change up his bedtime routine. Feed him a little before bedtime (maybe half an hour before??) and then read him some stories somewhere besides where you usually nurse. Whatever routine you pick, just be sure you're consistent with it and take the nursing out of the equation so that he is going to bed awake.
I'm going to be honest, starting this routine at 11 months old is going to be harder because he is used to calling the shots so to speak, but it can be done, so don't give up! You just have to be consistent and give him some time to get adjusted to his schedule. In the long run, you will both be much happier for it. Best of luck and if you need further advice, feel free to send me a private message.