Shifting manually on a failing automatic transmission?

Okay, so I have a 02 Honda accord v6 coupe. My transmission is failing. It has issues with the 1st and 2nd second gear; it like jumps or something, it's weird. I realized that shifting it manually gives it a much smoother, more consistent acceleration. I.e. It is faster, and doesn't "stutter" between the first, second and sometimes third gear. I read it's not harmful, but in MY specific case, can it be helpful?

The wrong ATF can cause hard shifts. There may also be PCM reflash updates that address your problem. Might be best to do a dealer visit on this one.

If its sounding smoother your probably doing it good. So i would continue doing it manually but get it checked out or replaced as soon as possible or the only place you'll be shifting is on the side of the road lol