Sounds like they're planning to decommission Astro IPTV TIME nationwide at the end of this year? o.O
Do you really want to convert that soon though? Cuz it's like, you're the last few remaining of Astro IPTV TIME customers out there...

Anyway, to do so, tell Astro that you would like to decouple your Astro IPTV TIME subscription into standalone TIME Fibre subscription, and you are not interested in Astro Fibre.
Doing so will also mean you'll lose Astro IPTV Multicast service permanently.
To continue enjoying Astro TV service thereafter, they'll offer you to upgrade to Ulti or Ultra Box and then opt for Plug & Play service.
Pros of Plug & Play service is, it's purely Internet streaming to access Astro channels/content & no satellite dish involved. Cons of Plug & Play service is, it is adaptive streaming and the streaming performance is subjected to network congestion.
If you insist to use back your PVR box, you can only go for Satellite option, where either you connect to your building's centralised dish or use your own Astro dish if your building management allows it.
The likely reason they tell you to go for Astro Fibre is, probably they found out that TM HSBA coverage is available for your unit. If you proceed with Astro Fibre, TM fibre cable will be layed (if haven't) and use for your Astro Fibre service.
My personal opinion: If you already have TIME, why bother going for Astro Fibre which uses TM infra...?

If I were you, I'd rather stick to standalone TIME Fibre.
Thanks for your advice.
I am keeping the Time Fibre.
Was seeking advice how to decouple Time from astro with minimal and hopefully no down time to the internet.
Anyway still waiting for Astro to call back. Was busy and asked them to call back. See what they have to say. Astro Fibre is not available at my place as from Astro website.