Marsha,
I so understand your position because we are gearing up for our own lifestyle changes in less than two years. It doesn't sound like you have a ton of extra in your budget, but what I'm trying to do is pay as much as I can towards things NOW to make it easier later. Is there any possibility you can refinance your mortgage to a lower rate? And this would stink because it would ultimately cost more in interest, but could you extend the term of your mortgage to get smaller payments? In other words, if you have 15 years left, refinance for thirty years at a lower rate. You could always double up on payments if things ease up after your son is out on his own and you have gotten your raises. I may drop my landline and tv when my dd leaves for college. Of course, that may not be practical for you since your son will be living at home for a few years, but I don't think I would miss the tv. Do you shop at thrift stores? It takes time to comb through the racks, but I have found some real gems. (Land's End sweater $75 in catalog---I got it for $5.) Around here there are bread thrift stores, too, because we have a distributor in town. Maybe you have something similar. Can't think of anything else much right now other than stocking up when things are on sale, but I bet you already do that. Maybe as your son gets a little older you can look for a job that pays more than your babysitting job. (I also plan to get a second job, partly for the money and partly to alleviate the loneliness I know I'll feel. )
Someone suggested maybe looking at private schools. There is one BIG problem with many of these. A huge number of them expect the non-custodial parent to provide their financial info and support, regardless of what the law says. My dd is having difficulty because we have no contact with her dad, although he does pay child support. We can ask for a waiver, but it's not guaranteed. When your son is ready to transfer from cc, he may have to look at FAFSA only schools. Luckily, my dd has found at least one she adores--I just hope they give us enough aid to afford it. In case they don't , I have already told her our state school is where she may end up. Just something you might want to think ahead about.
And believe it or not, you will be able to get through this. I know, because several years ago before I got the job I now hold, I made half of what I do now, and we survived. It wasn't easy and it wasn't fun, but when my daughter asked how come we never had any money, I would say to her "You have a roof over your head, clothes on your back, food in your tummy, and someone who loves you very much. You are so much luckier than so many people." Good luck! If you need a shoulder to lean on or an ear to listen, just pm me.