Hi, @GJA! I had similar problems with barre chords on the acoustic. There’s a barre chord course in the TAC Skill Courses section. I did that one every day for a month and it really helped me build up the strength to fret them correctly. At the beginning of the month I could only tolerate a minute or two each day, but I would do that minute or two each day and my stamina got better each week. I’d encourage you to give those lessons a try, even while you’re working other parts of the TAC program.
Regarding finger tip pain, it took me a solid six months to get to the point where I could play for an hour or two without getting tender on the fingertips. Now after a year of daily playing, I only get sore when I’m playing on the electric with lots of bends using my pinky. But it really took a good number of months of daily playing to get to this point. I would just quit when you’re sore, and expect that gradually your fingertips will become optimized for guitar fretting!
Good job sticking with it!