Can your DH give a bottle before going to the sitters? I liked to space out my LO -- nursing or bottle, half hour to an hour, then solids. If not, I guess you will have to decide based on your LO's habits if you think the solids would interfere with a later bottle. My LO never had trouble eating, nursing, anything, no matter the schedule! But some babies might not want their milk if they are big solids eaters.
I remember that time of LO nursing a lot, having solids and napping was very tough to schedule. Every hour was something -- either nursing (or bottle while I was gone), solids, then a nap.
Mom to my sweet little "Pooper," born 10/12/11, and "Baby Brother," born 6/23/2014, and married to heavy metal husband. Working more than full-time, making healthy vegetarian meals for family, and trying to keep up with exercise routine.