Disney broadcast TV animation at that time was done animated on two’s @ 24fps mostly, with very quick actions on ones sometimes. I’d say 12-18fps, but of course you could re-use stills quite effectively as well with only small parts of the characters moving/animated, such as a head turn only, or blinking eyes.
Disney animated feature films are animated at full 24fps, mostly complete redraws of each frame.
It’s easy to calculate your production time. It depends on your drawing speed and speed at which you are able to animate. If frame-by-frame animation like early 90s Disney animation for TV or direct to video is your goal (which is pretty crappy quality compared to the old 40s/50s cartoons), on average 12-18 seconds a week, if you work really, REALLY hard.
So, let’s take 14 seconds per week for a Disney-type 90s quality style. This will be frame-by-frame animation (no cut out characters!). Let’s say the animation’s output is 24fps, animated on twos only.
Per week: 14 seconds * 12 frames = 168 frames per week you will have to produce. You want a 30 minute animation: roughly four weeks per minute of work by yourself:
4 weeks * 30 = 120 weeks. That boils down to 2.3 years of pure animating production time. This does not include drawing storyboards, coming up with stories, the scripts, finding voice actors, recording voices, planning dialogue, music production, editing, drawing backgrounds, creating characters, etcetera, and so on. Also multiple characters in a scene would slow you down more.
I’d say three years of non-stop work on your own? For a typical 30 minute TV / direct to video Disney 90s quality animation. Probably longer, because you’d have to do all your own cleanup in Toonboom as well. And you’d have to produce 24 frames per day from Monday to Sunday.