Ok I'm overwhelmed with baby. Can you offer tips?

Hello. So baby boy is 5 months. He’s strong, healthy and seemingly very curious. He is also the fussy type. Might I add extremely fussy. Needs tons of attention and can’t stand being put down by himself. He will yell, kick and scream whatever it takes. I don’t want to let him cry for more than 2 minutes before picking him up because I read that babies that cry themselves to sleep produce a ton of cortisol and it may have negative effects on brain development.

I’m a very busy part time student, part time worker and of course my spare time is baby sit time while wife is out working as well. Please feel free to offer words of wisdom and advice. I get overwhelmed especially since my mindset is always, “what is the next step” kind of mode. And it gets extremely hard to concentrate when doing research for homework. Also I get extremely frustrated that I can’t comfort him sometimes. For instance right now, I’m all alone caring for him and he gets bored of his toys. He has a walker, excersaucer (jungle edition), and other assorted toys. I read to him and he seems to lose attention after a while of hearing the animal sounds.

I want to figure this out. So far when he cries I check his eating hours appropriately, change diaper regularly, check to see if he’s sleepy.

I do have “dad” theories but my wife doesn’t believe me. From what I studied in Child Development I think he’s attached to his mother. He definitely is surrounded by women in his life (Auntie, Grandma, Wife, My Sister/Babysitter). And sometimes I don’t believe I can offer the comfort they can (since babies naturally like higher, gentler feminine voice, something I don’t have) Please help.