As long as you meet the minimum requirements you’re all good. I would get references for your work experience if you haven’t already so you’re prepared in case the unis ask. Make sure you have notes on what you saw, what you did etc and can link the experiences meaningfully to why they helped you develop/realise skills which will come in handy once you’re a vet/student, as that is likely going to come up during the application process and is the important part. If you feel you can do more, there is still time between now and October to get more, perhaps a riding school as they tend to love helpers, or kennels, shelters, dairy farms etc, but as I said if you have the minimum I wouldn’t stress too much.