leeks under fleece

Fellow Gardeners,

I bought some leeks about a month ago, planted them and put a fleece on the top. Since then I have been digging the rest of the plot doing various other gardening jobs and then it has been raining and snowing. Plus I have my day job. In a nutshell I have not looked at them in a month. So yesterday I had a peek and they do not seem to be flourishing. I was wondering if I should start again or perhaps I should do a bit of maintenance (weeding, opening up the earth a bit, apply a bit of nourishment,...). If I take the latter option when is the best time of the day to take off the fleece to avoid the leek moth (sole purpose of the fleece, I see they lay in April and May and then in  August to October)?

Anton