My husband is considering leaving ..

Me and my husband have been together for 6 years married for 4. We have two beautiful children together 4 and 2 and I'm due any day with our last baby. My husband is in so many ways a good man who wants nothing more then to be able to take care of me and our baby's. He recently talked to me about him waiting to join the army. He's brought this up before when we first got together but we decided to have a family instead (we was going to join together but I found out I was pregnant and unfortunately lost the baby) we went to talk to them last week and they are in a rush to ship him off meaning I will be left with two toddlers and a newborn for up to 7 months possibly longer depending on his job and how long he would attend training.. he's asked me how I felt about it and I'm honestly not sure everyone I think of him leaving I cry (I'm sure it has something to do with being hormonal) I asked him to give me time to deliver the baby before I give him a answer as I feel I can't think clearly right now. But either way the thought of him leaving is terrifying we don't have family and not alot in the ways of a support system for me to lean on while he's gone. I don't want to tell him not to go I don't want to be that person but I'm so scared for him to go. He don't want me talking to anyone about it until he's already signed the contract if that's what we decide I'm just at such a cross roads and I'm scared I can't do it without him he's my best friend but I also don't want to be the reason he doesn't follow his dreams.

HE 100% WONT GO IF IM NOT ON BOARD I'm just so overwhelmed by the thought of it that idk what to say to him.