Moving Back in With Parents

My fiance and I have been together for 3 years. Two of those years we were living together with our parents (not in my plans at all but stuff happens), then we moved into an apartment together. We have been living in the apartment for a year now and we are wanting to start saving to buy a house so we can start a family. I have about a year and a half left of college, and my senior year I have to student teach most of the week so I will not be able to save as much money as normal. The only way that we could save a lot of money is to move back home with my parents. My parents are completely ok with that, in fact, they are excited to have us there and think it is best for us. However, I am having trouble with it. My fiance is 100% on board with it because he loves to save money. I feel like this would be a huge step back from what we are doing now and I am all about taking steps forward. I know this would help us tremendously, but it might also cause a strain on my relationship with my fiance just with us being so used to being so independent. We would stay there around a year, which would mean we would be there when we get married in October 2020. What are your guy's thoughts?