Out of Country days query - FLR(M) Extension , ILR through 5 years Spouse route and 10 years route

Hello

Here is my immigration history:

2012 August - 2014 April : Tier4 General

2014 April - 2017 May : Tier2 General

Applied for extension of Tier2 following this.
Initially received permit from 2017 May - 2020 May.However, got curtailment letter in May 2018 due to sponsor license issue, so switched sponsor and again applied for Tier2 General extension , got this approved from July 2018- June 2021.

Again switched from Tier2 General to FLR(M) Spouse Visa in October 2018, as my husband received ILR. My present Spouse Visa validity from October 2018 - April 2021.

I've been out of country twice so far during below period:
March 2013-April 2013 : for 28 days
July 2017 - August 2017 : for 28 days
I would like to again travel out of country now in Jan 2020 for few months, so have below 3 queries.

Query-1 : I'm due for Spouse Visa extension in April 2021. How many days maximum can I now go out of country in 2020 , so it wouldn't effect while I will be applying for Spouse Visa extension in April 2021 again.

Query-2: As I've entered UK in August 2012, I will be eligible for ILR under 10 years continuous residence route in August 2022. So, how many days can I go out of country now so that it wouldn't effect my ILR in future in this 10 years route.

Query- 3: Incase I dont apply for ILR through 10 years route in 2022 for some reason or if this route gets removed in future, I will have the opportunity and be eligible to apply for ILR in 2023 August through 5 year Spouse route. So, how many days maximum can I go out of country now so that it wouldn't effect if i apply for ILR in this 5 year Spouse route.

Can someone please answer these 3 queries as I'm looking to book my travel tickets ASAP.

Many thanks in advance!

1. There is NO absence limit for FLR M visa holders.

2. Yes. The absence limit is a total absence of no more than 540 days in the whole 10 years and no single absence of 180 days or more.

3. There is no plan to remove 10 years residence ilr. There is NO absence limit for FLR M spouse visas!