Phal. Fertilizer and Repotting Newbie Question

[stefandeak]

So here`s the story first: I`ve had this phal for about two years. It`s been doing very well during this time ( even flowered last spring ), despite the fact that I didn`t fertilize it at all ( I know, bad move ). Last September - October, I decided it was time to use some fertilizer. I did so at the end of every month ( so once a month ) until now. I live in Japan and there`s not a ton of local options for orchid fertilizers, so I ended up using a 6-6-6 one. I used it at around 1/4 recommended strength. Also, I moved its location to where it`s receiving morning sun now.
What`s happening now is that the orchid is in spike, and at the same time there`s TONS of new root growth. I`m talking like 15 new root tips shooting out. Absolutely all the roots in the picture ( except one ) are 1 month old. No buds on the spike yet, it just started growing a week or two ago.
Now my question: "Growth Season" for phals, as far as I understand it, starts around spring after blooming. Sources on the internet I found say that it should be applied weekly during this period. Should I keep going with the schedule I have and fertilize once a month and then start doing it weekly once it gets warmer in April, OR should I start doing it weekly now since for whatever reason this orchid decided it`s time to grow roots and maybe it needs the extra nutrition?
Also, since I kinda overpotted it slightly last spring, is this a good time to repot since the new roots are not established yet, or should I wait until it`s done blooming?