A plan to repot my bical

[sooxiwei]

Hi all, I was planning to repot my N. Bicalcrata when I'm free as soon as possible because the size never seems to grow since I got it last year, a few questions that I would like to ask:

1. I had been potting it at the side of the pot(twice), does it affect it's growth?
2. Can I keep it with a water tray at the bottom of it after I repot since I'm going to plant some live sphagnum with it?
3. How long should I leave it under shades after repotting? On usual terms, I kept mine for a month under shades before exposing to sun light, but I'm not sure if it's too long or too fast to do so
4. Is there any way that I can boost the growth of the the bical?

Thanks a lot, appreciate all replies