TTC; he thinks we should stop for a while

We have been ttc for 20 months. My fiancé has had some mental issues the past couple months with anxiety. He’s been having random panic attacks, and had his anxiety medication adjusted. He thinks we should wait until after the wedding to ttc again. We are getting married in May. I feel like it’s such a long time to wait. I understand why he would want to take a break ttc because he wants to get the anxiety issues taken care of and under control. Which I get it, id want my anxiety under control before bringing another life into this world. He said he still wants kids but I am scared he’s going to get scared and not want too. Everyone has anxiety about having kids. I cried last night because we have been trying for so long to suddenly just stop. We even started letrozole, it’s my second month taking it. He said if we don’t get bfp this month that we should take a break from it. I am very sad by him wanting to stop ttc; I feel stupid for crying over it because Ik we still have time. I am just worried we are never going to get our little baby. Am I overreacting by crying about it? Btw we are both 23, so Ik we still have time to have children, but I’m worried we won’t be able too because it’s already taken so long with no positive results. I have depression and anxiety as well but I have mine under control and I see my therapist twice a month. I just feel like I’m overthinking the possibilities. What do you think?