Weeding newly seeded lawn?

I seeded 8 weeks ago (with gro sure fast grow seed, highly recommended, I've mowed 4 times a week apart already!)
Some weeds are coming through, besides the darn horsetail, dock is the main one. My other lawns are more weed than grass which I don't mind, they certainly need mowing less frequently! But this area is only lawn so I can manage it till we plant fruit trees and put bulbs under them. So I could do with it just being grass for autumn when that's planned.
I have some weed and feed, wilkos brand, but it says not to use for the first year. Is there anything I could use on it this summer?

 

if cutting regularly the ones you have mentioned , each time you cut the lawn will weaken them dock Horsetail

you can use a spot gell that you rub on to the leaves

http://www.greenfingers.com/product...T0968D&co=fr&gclid=CKLAhcqN1cYCFY_JtAodkCIIRw

 

Ah yes, that would work. It'd be fiddly but worth it I think. Thanks, I'll pick some up today...

 

make a collar out of card board and slip that under the plant before you put the gell on

 

Lol, there are hundreds!