I'm afraid that you do need to be brutally honest with him. List out all the things that he does that make you feel unloved and inadequate.
Go into the conversation with a clear path in your mind of what you'll do depending on how he reacts.
A true partner would feel ashamed of themselves for making the person they love feel like that. They'd apologise and do everything in their power to make it right. This is the partner you work with to stay together.
[I am by no means minimising that he shouldn't be saying these things in the first place, but we all get annoyed and frustrated with our partners sometimes - this is giving him the opportunity to realise the error of his ways]
The partner that turns those accusations around back on you and/or attempts to minimise them ("I only say it because you don't understand" or "You're being too sensitive" or "I'm only joking") is telling you who they really are. They don't want to understand your point of view and/or don't care about you enough to. This is the one you should be prepared and willing to walk away from.
I suspect your H will fall into the latter category unfortunately, so before you have this conversation, think about what you'll do. You deserve better than to be treated like this, so start thinking about what a life without him looks like. Get your ducks in a row in advance, so you don't have to waste any more time with him than you need to.
There's no shame in a relationship not working out. Everyone deserves to be happy and I can promise you come out of a relationship like this with a new feeling of control and confidence for walking away.
I broke up with my ex who had spent years conditioning me to be how he wanted me to be. He belittled my job (even though my prospects were better than his - which was the crux of his issues) and isolated me from my friends and family. Luckily I had some excellent work friends who helped me see the light and I broke free.
The irony was that when I went out on my own, I had a bigger friendship group than when I started as not only did my original friends return, I had my work friends and, perhaps more satisfyingly, I took some of his friends too!
Good luck OP!