Feeling discouraged ☹️

I really don’t want to stop breastfeeding my 16 month old (on 3x/day) but am wanting to conceive #2. Period finally returned a few months ago...last one was 45 days long with no peak OPK and it does not look like I’m getting my peak this month either 😭. Anyone dealt or dealing with something similar and have had any success?? Do I need to just wean her??!