In theory, use of pastes every few shaves is not good. But at this stage of the game I'd say do whatever it takes to get comfortable shaves while you work on your stropping and shaving techniques. Eventually most shavers will find the need for frequent touch ups will become less and less frequent; this is the point where technique takes over. You could also try stropping mid-shave or right before you shave your goatee area.

That being said there are many experienced gentlemen who do have to touch up often because their beards are extremely tough and chew edges up. This might be you, but for now it's more important to concentrate on technique before ruling it out and blaming your beard.