K.H.
I have a 20m old son nursing. I just finished reading "Mothering Your Nursing Toddler" - a book that LLL endorses. Bottom line is that it is a phase that will pass. It's super common for them to nurse "upon waking, going to sleep, or whenever mother sits or lies down" (not an exact quotation, but close). My daughter, now almost 5y, nursed until she was 2.5y. At 18m she suddenly dropped a few feedings and was nursing only 2 times a day regularly (plus comfort for owies). My son, however, nurses more frequently than that. Different babies have different needs. I've restricted him to only nursing at home or at a LLL meeting.
If you are wanting to further the weaning process there are a couple of good books out there. Actually the one I mentioned above has a good size chunk at the back that discusses several weaning methods. There is also "How Weaning Happens".
To me, it sounds as though you're wanting a breather between nursing sessions. Distraction is the key for me. Parks, zoos, etc. Make sure that fun snack foods and plenty of water are on hand. I cut apples, peaches, pears, etc into really thin slices and we call them "apple cookies"....of course it's just the fruit, but just calling it "cookie" makes it more desirable.
Beyond reading and distraction, I would recommend going to a LLL meeting.
http://www.lllusa.org/web/SanAntonioTX.html
It looks like there's one next Thursday morning. Perhaps you could go while the older ones are at school? You would be more likely to meet another mom of a nursing toddler...and you could ask what works for her.
Here is a link to groups and leaders in your area. If you're unable to make it to a meeting, you could call a Leader. Phone consults with LLL leaders are completely FREE.
I hope this helps. If something I wrote needs clarification or if you have any questions for me, don't hesitate to email me.
K., mama to
Catherine, 4.75y
Samuel, 20m