How do i feel desire again after having a baby?

Make one agreement explicit: for a set period - say a month - touch will not lead to sex, even if you both feel like it. That sounds counterproductive; it's the whole mechanism. When touch can't be an opening move, it stops being a negotiation and becomes safe again. Start with hands, shoulders, sitting close. Ten minutes a day. Most couples are surprised how fast warmth returns once the question mark is gone from every hug.