Breastfeeding 10 weeks pp and period started

Ha

I’m 10 weeks pp and think I’m getting my period 😭 my lactation consultant warned me this could happen since my son started sleeping 6-8 hours at night. She said you supply could dip because of the hormones, does anybody know how I can help prevent it? Or what I can look out for to know if my supply did drop or not? I’m so anxious because I really want to keep breastfeeding and this seems so scary that it would ruin my breastfeeding journey that I’ve worked so hard to have.