i did that to a hamata and it died.
watch out.
personally, i grow everything on a year-round 16 hour photoperiod. Try that and see if anything works out.
don't change more than one variable at a time, because if it messes up, you'll never be able to tell waht you did wrong.
My advice for the muluensis x lowii is to put it in brighter light (or closer to the lights), keep its conditions as stable as possible (though that plant isn't very picky at all with the conditions, as long as theyre stable), and besides watering it, totally forget about it. Mine started to decline once, so I kept trying to change things to try to make it better. It ended up getting worse (probably because I changed the conditions wayyy too often i.e. more than once every 3 months), and I eventually totally gave up on it and put it in my terrarium, but kept watering it. Now its growing faster than ever before, and is producing 3pitchers at once