3B Complicated Query

Hi Experts,

I have filed 3B nil return mistakenly in the month of January but filed correct R1.
Later on I got to know in May that I have filed wrong 3B at that time I have made the challan for the exact liability(didn't set off with ITC) and paid the amount

Question
1.) Do I have to take the liability and ITC of Jan month in next month(August 3B)

2.) The amount I have paid through challan in May is reflecting in my Cash ledger, is it okay or I need to adjust it?

Thanks for your prompt reply