can I exclusively pump breast milk cause my son still can't get the hang of latching even with the…

Absolutely!

Have they checked for tongue-tie?

tongue-tie? idk I've tried everything different types of shields I've even tried putting formula on my boob just to lure him in more cause tight now I'm supplementing until my supply increases more we do a ton of skin to skin and different positions and we've just never gotten the hang of it @mommytoabel

I exclusively pumped for 3 months before I could get my son to latch. Lots of moms exclusively pump.

Sometimes they have to cut the frenulum under the tongue in order for baby to be able to latch.

yes, it's very possible :) Pump often because when you put baby to breast you get more milk you can still do skin to skin and if you want to keep working on the latch, baby might just have a small mouth, it takes time @madison0816