No, it is not okay, or acceptable. This is why it is not recommended to do your own shots. And how much do you know about the quality of the vaccine you used? Plenty of them DO NOT stay refrigerated during or after shipment, or in storage before or after sale – which will TOTALLY affect the efficacy, if not make them USELESS. Some vaccines are equally ruined if the get accidentally FROZEN during shipping (in winter weather). Heaven help you, if your puppy has a vaccine REACTION after a shot, which does happen. BTW, while you can also self-worm the puppy; there is NO wormer that kills tapeworms sold, OTC. You also cannot legally get any heartworm prevention for the puppy which should be given in most states – even during winter.