FTM Breastfeeding

So I had this gorgeous baby on 2/10/20 and been hand expressing colostrum when he doesn’t latch or is too fussy. I’m trying to learn to pickup his cues but this afternoons feeding was a struggle and I broke down in tears. We eventually took a break and he latched again. Some feedings I feel like good progress and others I feel defeated. I seriously can’t wait until my milk comes in. I feel like it would be less of a struggle or guessing game for both of us. How long did it take for other FTM supplies to come in?