What to do??

My boyfriend of six years and I JUST had a baby. We discussed engagement, pretty sure we were on the same page. So we had a pretty heated convo, he told me “maybe I’m not ready for that” and he wants to focus on his music/artistry career, so he can have the $ to buy a ring, because the job he has now he can’t afford a ring? Which is a total lie because anything this man wants he saves for. He told me in October he had $3500 saved up so when I sent him the ring I wanted which was $900, he said he didn’t have the $. So I’m like yeah you do, you just told me you had $3500 saved up, and he said yeah for me 🤔🤔🤔 at this point I’m FUCKING over it. Don’t wanna bring his dumbass into another year with the same excuses and bullshit. And I want you to ladies to let me know if I’m wrong OR if he’s got full of shit written on his forehead. Every time I’ve tried to leave he almost begs for me to stay. But it’s just so much dumb shit happening between us that I’m sitting here like why the hell am I even dealing with it?