Weak Mother Plant after Keiki Removal

[DweamGoiL]

I was surprised with a keiki a couple of months back. My first one ever. It grew really strongly and in a matter of about 2 months it was huge about 3/4 the size of the mother plant. When I separated the keiki, it had lots of roots and overall took about half the root system with it. The mother plant a week or so after I separated the keiki, produced a flower spike and it's growing nicely, but the mother plants' leaves are yellowing. It looks more like a mineral deficiency type of yellowing rather than drying shriveling leaves.

I am wondering what to do. Do I cut the flower spike to give mom strength to bounce back? or do I let it bloom and hope for the best? I am leaning more towards sacrificing the flower spike, but I would really appreciate some expert opinions. I am also adding a bit more fertilizer with a higher water concentration, but adding it at every watering, but I just started doing that so I am not sure if it's working yet.

FYI - I've had the mother plant for about 5 years now so I think it has plenty of life left to live age-wise.