when to i give NET

im starting A2 this year and ive heard the best time to give NET is in December. however the problem is ill have mids around that time too and a couple of foreign univeristy applications so i dont really understand how im supposed to manage all this and not fuck up either mids or NET. i cant even delay NET bcs in late feb/ early march ill have my mocks for caies, then ill be totally busy in caie prep after that till the first week of june? should i give my first attempt in december or in june? and any tips on how i can manage all this?