Yes, looks like dehydration. Try to give little one more water these days - but baby 5 months old so not too much too. If u giving fm, can make additional 5-10ml water in each feed. If u latch/bm then maybe spoon feed/bottle feed a bit of water? If u started solids, definitely need to give some water too - I add a dash of water more into the purées whether it was store bought or self made. If after 2-3 days still like that, pls see doctor
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