Hmmmm they do reach a peak of crying at about week 6 and then start to slowly settle often.
I think you should try to spread feeding to every 2-3 hours for now and just cuddle them in-between, take for a walk to distract them etc. So you can give your boobs a break, nipple shields are worth a try if desperate though? I used to smoother myself in Kamillosan between feeds and wipe off before, that was much better than all the others I tried.
Make sure you're eating plenty of high calorie foods like flap jacks and porridge for breakfast to keep your energy up to produce milk and drink plenty of water. Now's the time for cake and chocolate whilst BF As I'm sure you've heard already.
Have you looked at the kellymom site? That's very helpful. Or go to your local BF clinic for some tips, or call La Leche, it's free and they can really help you too.
There is always the possibility it is wind of course? My usual blurb I give out is basically to try not to worry. It's such early days; you cannot spoil a baby at this age. Do whatever it takes to survive
They'll settle down again soon enough, there is a growth spurt at week 6 (I think).
You could try some infacol or gripe water at every feed for a while as that can help, if you're not using one or the other already. Make sure you wind them well and maybe wind them half way through every feed as well, if it helps?
My second child cried for 2 to 3 hours a night until aged 10 weeks and I spoke to my health visitor about it, she agreed it was probably colic and her tips to try were:
Warm bath covering tummy.
Lying him on his tummy with a warm (not hot) hot water bottle under him to soothe tummy.
Cycling his legs whilst he's on his back. Holding feet palm to palm and rocking legs sideways, whilst lying on floor or lap.
Or scooping with right hand down his right side whilst holding feet palm to palm.
Or rocking him face down well supported on legs.
She also said don't eat anything that gives you wind such as brocolli, cabbage, caffeine, cauliflower, garlic or other stimulants. She said if none of the above did work I could try buying Colief drops from a chemist and mixing in with feed by expressing it first, as she said sometimes colic is caused by a lactose intolerance.
I found that out of all of those the cycling the legs was particularly good. I also found that as he had trouble burping, the infacol made him cry harder as it coalesced the bubbles into one big one that still went downwards but hurt more. But giving him gripe water after every feed straight away really soothed his tummy. I had to do it every feed though without fail.
The warm bath in quiet room was also a real help. Every night at the time he started to get agitated I would put in the bath, in a bath cradle and keep putting warm water on his tummy and every now and then top the bath up with warm water, so it wouldn't get too cold for him. Once or twice he was in the bath for 2 hours in the early days as it was really calming for him. Once he started doing big yawns and it was bedtime, I'd take him out into a dark bedroom and change him and BF him quietly and then often he'd go to sleep straight away. He'd wake for feeds at 10.30pm, 2am and 5 am often at this stage. In the day I'd keep him up for only 90 mins only before putting back down for a nap.
Things will get better soon lovely, sending you a hug x