Im planning to apply F2 visa.?
In my opinion, it may be too late to apply for an F2 visa if your husband is already on OPT that is ending in 2022. Here is my reasoning. Usually people get a visa to accompany their spouse when they first apply for the F1 visa. At this stage, it is clear you are accompanying him while he is studying. However, waiting until he is working on OPT and he is left with one more year appears as if you are going to join him for a much longer stay. Considering how long it will take to get the visa and the time that will be left for you to stay in the US, it seems rather pointless. Instead of getting a rejection on your record, rather let your husband complete OPT and see if he can get a permanent position and proper work visa then he can petition for you properly. It is worth the waiting.