Some finish in one sitting, while others opt to take the course over a period of several days. (onlinetraffic.com)
If you want to switch foods, do it gradually over a period of several days by mixing a larger proportion of the new food into the old each day. (1800petmeds.com)
When introducing a new food, gradually add it to the hamster's regular food over a period of several days. (smallanimalchanel.com)