Happy new year to you, too

I wouldnt divide anything until it becomes rather obvious that you can. If its marginal, let it be. Perhaps in the spring, you should see if you can lightly tease the daughter plants away from the mother, if it isnt easy, dont force it.
As far as your nepenthes question goes, i'm not sure, i dont grow mine in sphagnum, but rather in a coconut husk and peat moss mix, which i water every two weeks or so (i keep them in a terrarium, so watering doesnt happen perhaps as much as they say you should...)
I hope someone comes along with advice on the Nepenthes!

Ditto the advice about dividing. D. aliciae produces plantlets from the roots. Keep well lit for the LFS. Once LFS is established, all it needs is to be kept moist. They really have different cultivating preferences.

I do not know how resilient D. alicia is yet as it is one of many species I have not grown. I also have not had many butterworts yet, so I could not advise on the ease of dividing them. I have heard that they are finicky about roots disturbance.

I grow my Nepenthes in coconut fiber, bark, and peat in a 1/3 mix each. I water mine often but only a little at a time to moisten the mix. If you do leave any water in a tray, make sure the water level is low and that the pot the plant is in is very tall. I would suggest a pot much taller than the Nepenthes roots are long and less than 1/4 inch of water in the tray at any time. Nepenthes can root rot in standing water, so just be cautious and keep its roots above standing water as much as possible. They like water, getting rained on practically every day, it's just that they live in well drained mix that stays moist yet airy. Their roots simply drown in mix that does not allow drainage, leading to rotting.

Thanks for the advice guys. Ever useful, as always.