Hi, I can't comment as to whether it will get easier as i'm in a similar situation so can relate. I'm currently trying to eliminate formula top ups after going on them due to baby weight loss, dehydraton and jaundice, due delayed milk coming in and low supply after a traumatic birth. If your little one is gaining weight well, healthy and has plenty of wet/dirty nappies you do not need the top ups! I wish I'd known as much as I do now when we were readmitted as I'd have been able to challenge the advice given by all the HCPs!
my little one is 5 weeks old too having similar behaviors crying and sticking hands in mouth. At the moment I'm removing day time top ups but keeping 2-3 over night so I am able to get some sleep and recharge. Towards the end of the evening the tantrums start and she refuses to latch on etc, I keep trying for an hour or so before giving her the top up, which does calm her down massively and then she does latch back on after.
Are you able to express any milk at all and give this as a small top up to calm her down so that she latches back on? I know how hard it is tho, the past few days my daughter has pretty much been feeding constantly throughout the day so I haven't had the time/anything left to express!
Another thing that sometimes helps me is for someone else to take my daughter for 10-15 mins to sooth her and calm her down, I think part of the frustration is when they can smell the milk but cant get it as quick as they'd like it, it can add to the frustration and make things worse!
I know how difficult it is and you're doing an amazing job persevering.
Good luck, i'm sure you'll get there! 