Is HSA testing period apply to my case?

Hello,

In 2024, from January to August I have my HSA account and make contribution through my paycheck. I lost my job in September, I keep my original HDHP plan with no change and continue it through COBRA. My wife does not work . She  will have her new job in November and her company offers family health plan but is not HDHP. We plan to switch to her company offered health plan in November. I am over 55 years old. limitation for HSA contribution in 2024 is $9300.  So far I have made $6600( January to August) contribution already.

questions regarding HSA:

1. Can I still make contribution in September and October by myself? what is the max amount that I can make for these two months?

2. If I can not use up all money in my HSA account in 2024, can I use them to pay my medical expense next year? even when I do not have HDHP next year?

3. Do I need to meet testing period? Which I do not think it applicable to my case because the   contribution I made is not   based on being eligible the entire year under  the last month rule. Is that correct?

 

Thanks.