Want another baby but don’t want to gain weight back?

I’ve been on a weight loss journey since I had my first child (she’s over two now), and lost 60-70 pounds. Trying to lose 30 more. Before my daughters four or five, I want to have another child, however I’m terrified of gaining all my weight back. I had preeclampsia and bed rest, and weight just clung to me. I gained about 50-60 pounds when I was pregnant. Advice??