Can I Cut 5mg Finasteride into 1mg Doses for Cost-Effective Treatment?

Friends, can you help me answer this question? Because the price of 5mg is relatively expensive, and my wallet can’t afford it.Similar to the picture

Yes everybody does that, beyond 1mg per day is useless for hairloss anyway

How can I get the 5mg finasteride, a doctor told me is only for the prostate