When it comes to finding synonyms for the phrase "more suckling," there are many options to consider. One possible alternative is "additional nursing," which implies the act of feeding a newborn or young animal. Another term that might be used is "extra nursing," which similarly suggests a surplus amount of feeding. The phrase "further suckling" could also be used as it suggests an extension or continuation of the feeding process. Another option could be "increased suckling," as it implies a growth in the amount of feeding that is taking place. Whatever the phrase used, it is clear that it refers to the nourishing act of feeding a young animal.