Moms please help😩😩

I’ll have a one year old next month and I’ve been battling this cradle cap/ scalp issue for EVER now. My son scratches his head all day everyday. There’s these flakes on one specific spot in his scalp and when I comb them out the skin underneath gets red and starts to bleed. Even after i comb them out and think they’re gone they tend to come back. On top of that my sons hair is SUPER dry. He’s African American with a 4c hair texture. I can’t seem to find a good hair routine for him to retain his moisture either. This is my first kid and I feel like a failure 😩😭 please help with tips or anything i can do