@smc4761 sorry to read about your bg problems. Regarding your weekend birdwatching stroll, have you tried setting a temporary basal to counteract the bg fall? I would try reducing your basal by half about an hour before you set out for the period of your stroll.
It looks to me (but I have no medical training) that you are over treating your hypos now you are on a pump.
This is how I understand it. When on mdi, the slow acting insulin assumes our basal needs are the same 24 hours a day. We know this is not true but it is a good approximation. Typically, we take enough slow acting insulin to keep bg stable overnight, when we are not active so basal insulin requirements are greatest. This means, during the day, we had a little too much basal insulin on board but we handle this with between meal snacks and slight underestimate of carbs (e.g. not counting veggies). If we hypo on mdi, we need to have fast acting sugars to deal with the current low BG and slow acting carbs to "mop up" the spare basal insulin.
With a pump, we match our basal to our needs at different times of the day to match our body's needs. Therefore, we should have no spare basal on board, we need to more accurately count carbs, we need to bolus for between meal snacks and we do not need the slow acting carbs after a hypo... so no longer an excuse for biccies.
I hope this makes sense and does not confuse things even more.
Good luck with the birdwatching. I got excited to see a Bullfinch in my garden this week. I think he may have knocked the Goldfinch off the top spot of best birds seen in my garden.