This is a naturally vining plant that resists growing upright. You can get it to attach to moss poles but only if the moss is kept constantly damp and the stem nodes are held in place against the damp moss at all times. Frankly, that is very difficult to do indoors. In addition, eventually, the vines will outgrow your moss poles and start to bend downward again.
I think the best solution is to prune. Think of pruning as being like getting a haircut, not as amputation or worse! Like haircuts, pruning has no effect on overall health. It simply changes its appearance.
Any leaf that is dying or in the way can be cut off with no harm. Likewise, when stems get too long, just cut them back. New growth will then emerge starting at the point where you make the pruning cut and continue growing from there.
Pruning allows you to keep the plant at the size and shape that you prefer, so go for it!