f/t question

So my collection consists of 0.1 normal 2500+, 1.0 Spider 1200+, 1.0 Albino 200g, 0.1 het albino 200g...
I bought a bunch of frozen rodents today hoping to switch over...the babies were interested and sniffed them but didn't eat, the normal didn't get a change to see what was goin on, and the spider didn't hesitate at all..The spider has always been on live feed, the guy I got him from told me that all he fed was live so that's what I've done for the past couple years not even thinking that he'd give f/t a chance, however this is the most aggressive bp in the world so it doesn't surprise me that he took it immediately...
anyways my concern is obv with the little guys, I want them to be on f/t and am looking for any tips on switching.
Also have a 1700g 0.1 pastel coming in the mail tomorrow and she'll need to be switched also..
thanks to anyone who can help

Here's some things to try:

Leaving the feeder in with them overnight

Heating up the head of the feeder very hot with a hair dryer before offering (so they have a good hotspot to aim for)

Pre scenting the whole room/area you have them with the feeder smell (by heating up the feeders with a hair dryer and blowing the feeder smell around the tubs/tanks/rack)

Offering the f/t feeder when the snake is inside a hide by leaving it or moving it at the entrance

Just keep in mind some bps just won't take f/t....I have a big girl that I got last year that's only taken 2 f/t for me in the time of having her (left overnight outside her hide) but other than those no dice and we've been having to get live for her.

will definitely try to leave them in there for these guys thanks