HELP!!

Twinkletwinkle⭐️⭐️ • Pregnant with our rainbow baby, my most special and precious little being! Cannot wait to meet him. 👶🏼💙
Hi ladies, so my little one is just over 5 months... lately he's went from sleeping all night to wakening up between 4/5 times, and fighting bedtime. 
He doesn't nap unless he is cuddled into the boob (exclusively breastfed) and today he would barely let me put him down, and if I did I couldn't be out of his sight without him getting worked up.. any ideas why? Xx