Forming coherent sentences as a stutterer

Forming coherent sentences as a stutterer I've stuttered fairly badly for most of my life. I've been to speech therapy on and off for most of my youth and a bit here and there as an adult. My fluency goes up and down, and sometimes it's pretty good for stretches of time. But, what I'm finding now that I've been 'down' for a long time, I'm finding it very hard to form a coherent sentence. I thought it was my work load, or my diet, or my lack of exercise, but now I don't know. I think I've got myself thinking WAY too much ABOUT my fluency - that the actual content of my speech is lost in the mix. I'm blabbering on about nothing, not making any sense, fumbling for words I didn't even mean to say, chiming in at weird points of a conversation or interrupting a friend when I think I'm confident I can get out what I'm trying to say. I feel like my brain is scrambled and I'm lost in this haze of non-fluency. I've been to see a speech therapist lately, but unfortunately can't afford to keep up the weekly visits. I've also tried toastmasters and other public speaking classes. Do any of you have any tips to get my confidence back? Techniques I can try practicing?