Have you got the entry requirements for Level 3? These are five GCSEs at grade 4 (C) or above in English language, Maths and a Science plus two others or suitable equivalents such as Level 3 in Animal Management (merit+) as well as GCSEs at grade 4 (C) or above in English & Maths or Level 2 Functional Skills in English & maths.
Level 2 does not have any formal entry requirements other than being employed in a veterinary practice. If you are an apprentice under 19 years of age, you will be required to undertake Functional Skills Level 2 in maths & English unless exempt. If over 19, you can study maths & English alongside the qualification, or opt out of these if you do not need them for future training opportunities.