I'm a first year beek, so I can't give you any great advise, but I installed a package and never did stop feeding. The guy I bought it from said to keep feeding first year. Makes sense to me as I hear others say don't feed, feed only when necessary and after thinking, if I feed while flows are going on then the so called syrup that isn't the healthiest is mixed with the healthy honey which to me is better than eating healthy for a while then totally unhealthy later. Did you see larva in both hives? How many times have you inspected? The light package may have super ceded and swarmed on you and something bad may have happened to the new one. I haven't used any chems yet, so no opinion there. If you are in dearth and have a small colony, watch for robbing, maybe close up the entrance to 3 inches. Also, many others may read your post if you title it better. Most post are questions that need help with so putting a title on it will probably get you better help from someone that has experienced the same thing. Just a suggestion.