I did day 40 HIIT with dumbbells, quite enjoyed it and got nicely out of puff. I used 3kg toCG’s 4 and it was all manageable even with a sore wrist, except for the side plank raises, which I did without weights (and by that stage they were challenging enough just bw!).
Welcome @Topsyturvey10, I agree with @BigButtons, start with Epic beginners then progress on to any of the Epic programmes. The first one has 1 hr long sessions, which were doable in the summer but impractical during a normal working day (for me anyway, I am not an early riser), but Heat is shorter and so is Endgame. For quick sessions try her advent series, or just her spot training sessions, many are just 20 mins.
Good luck!