Is my marriage over?

Hey guys! I am here for any advice that I can get! My husband and I have been together for 3 years and we have had our problems but I thought we were alright. The last couple of weeks he has been really distant and hanging out with his friends. I thought he was cheating on me. So I asked him if we were good. He told me that we were but the next day he was being weird with his phone. So finally I asked him what he really wanted and he told me that he wanted to leave. He said that for the past year he feels like he has been putting in all the effort into the relationship. He is the only one that plans dates and I was playing on my phone when we were watching tv. Yes I will take full fault for both. I am a people pleaser and am bad at making decisions because what if he would not be happy. He said that it started why I was pregnant. I was super sick my entire pregnancy and did not have an energy. We have also got married, had a baby and moved in the past year. It has been a lot of stress. Why he has thought that he was putting in all the effort, I thought the same. He has agreed to work on the relationship and we are going to do a couple of things this week. Is there any way that we can make it through this? Did I mess up? Thank you for all the advice