Condoms

Hello everyone, my husband and I are married for 5 years and have been TTC since last 2 years. My husband has low sex drive and he can only perform once during my cycle. Also we recently noticed that he can cum into my vagina only when wearing a condom, without condoms It will take him forever to cum. We’ve been poking holes in the condom to help us with TTC. But I’ve been reading that most condoms have spermicide which kills sperm cells upon contact. Please suggest a condom that can be easily breakable or that cannot kill sperm cells. Also cuz we can make love only once in a cycle, what day is the best day.

I tried asking him to come see a doc, but he is reluctant. Help please.