How can I get his attention!?

So my SO and I are in a rut. Things were going pretty good for us until I found out I was pregnant. Seems like that’s when the issues started. The pregnancy wasn’t planned but we’d been having unprotected sex for over a year so what do you expect. I was happy and he seemed to be as well.

I will say it happened at a hectic time. He’s starting graduate school this year so it’s going to be tight for next 3 years and he’s been working a lot to save money.

Well back to the story, so when I got pregnant we started to argue a lot and we just got in a bad spot. To the point that he said that he’d planned to purpose to me but it seemed like “bad timing” because we were constantly bickering. I think it was from the stress of finding out we were expecting and trying to figure out our future. I’ll admit that I was kinda freaking out.

We stopped having sex and I just felt like he wasn’t attracted to me anymore. Towards the end of my pregnancy we ran into some complications with the baby that pulled us closer together and made me forget about the other issues.

Well fast forward to now, I’m 2.5 months postpartum and things still aren’t the same as they were before I got pregnant. We barely talk. All day he’s on his phone on social media or watching tv. He shows no affection and if I didn’t try to spark conversation we probably would go all day without words. We have sex more often than we did when I was pregnant but still not how it was. Though our daughter does take up most of our time. He’s great with her and helps out when he’s not working but I just feel like we’re losing each other. His focus right now is school , working, & being a father. I don’t know where I come in at.

I’ve talked to him numerous of times about how I feel and he’ll say he’ll do better but nothing changes. I try to be affectionate and sweet but quite frankly I’m tired of feeling like I’m the only one making an effort so I’ve started putting a wall up as well.

I’m sexually frustrated, lacking love & attention and on top of that dealing with the stressors of being a new mom. I just want my man back. It’s gotten to the point that I’ve even started thinking about my ex and had a urge to text him. I stopped myself from doing it but it wasn’t easy. We’ve been together since 2013, I don’t want this to be the demise of our relationship.

Is this normal relationship issues that happen after having a baby?

How can I get his attention??