:grouphug:
I'm not really sure how to encourage you, but I can certainly empathize with you. Money's tight here, so when I've spent and invested I really feel like I need to use it.
Last year, I faced something similiar but with Sonlight. We had enjoyed cores P4/5 through core 2. I bought all of core 3, but just couldn't make it work for us. For some reason, with that particular core we were all miserable. I spent the first have of the year trying to get through it. Finally, in December dh had enough of it, and he told me try something else. We made the switch to TOG in January of last year by trying one unit. For us, the switch was good. But we also started half way through year 2.
I do use STOW for a spine with TOG. My kids love it. I use the other books for my kids to read more in depth. This is what works for us. I also don't block out a set time for history. It may only take us 30 minutes on Wednesday when we do geography. That's okay with me. Today, all we did was a crossword I made to work on the vocab. We may have spent 20 minutes. But all of the reading was done for the week. I have my kids do notebooking and that has really helped cement things for them.
I'm sorry that your so frustrated. I have watched your threads as you've prepared for TOG. You spent a lot time researching and getting ready for it. I really hope you can find a way to make your history studies all you want them to be.