Exceeded my ISA allowance 23/24

I’ve just found out that I’ve mistakenly opened 3 separate £10,000 Cash Isas in tax year 23/24! Two are with Nationwide & the 1 I had forgotten about is with Tesco.i only realised when Tesco advised me it had matured. In my panic I’ve closed the Tesco ISA after speaking to Tesco Bank, & transferred the money into my Nationwide current account. Reading this Forum maybe I shouldn’t have done this? Should I close 1 of my Nationwide Isas?

Hi Elizabeth,
As the error occurred in the previous tax year 2023/24 you should not attempt to correct the situation.
HMRC will contact you after the end of the tax year if appropriate. 
Thank you.