Hair dying

Hello ladies, wondering if you can help me out.

First time mom and I hear horror stories on how so much hair will fall out after birth, it becomes brittle, fragile, dull. I am getting my hair done next week I’m 32 weeks. Debating now whether I should keep bleaching it to keep up with what I have now or just dye it all brown and leave it alone. If I bleach it I’ll have to go in every 2 months for toner and then 4 months to bleach again. What do you ladies suggest? Should I dye it brown and leave it alone?