Have you tried a cleansing conditioner?
Out of curiosity I bought the Loriel Curl Cleansing Conditioner at Target since I had to get cards for my daughters K class.
I used it last night (about 8 pumps because her hair is to her hips again) and because I was so tired I forgot to braid it last night. This morning my husband said there were hardly any tangles.
That is just day 1, we'll see how it is after I get her from daycare this evening and tomorrow morning on a no-wash day.