Day naps trouble

DS co-sleeps, and until recently has also had all his naps in our bed too. 4 days ago he had 3 naps a day, 2 x 45-60mins & 1 x 60-90mins. He had his own little routine going where they all happened around the same time every day.

But 4 days ago he crawled off our bed, straight past the bedrails. So he cant sleep in our bed without one of us there anymore obviously, & staying with him isnt practical as I would get nothing done around the house. The cot will not fit in our small room, so we have had to put move him back into his own room for day sleeps & the first half of the night until I go to bed.

And now his day sleeps have regressed. He has become a little harder to settle to sleep, and is now only sleeping for 30mins each nap. 1.5hrs at the most total for each day, which just isnt enough. He is tired, grumpy & come evening he is so overtired he is taking up to two hours to get to sleep (rocking/bouncing. Huge drastic change from the 10-15mins it was taking previously).

I know its all to be expected with the routine change, but will it get better? Should he start to lengthen those naps out again? I am seriously wanting to pull the plug & put him back in our bed, but that just isnt possible as its not safe enough.

TIA for any help :)

Have you tried going down to 2 naps? I know my DD1 went to 2 naps around 7 months (DD2 is still having 3 though). Maybe he would have 2 longer naps?

Can you teach him to get off the bed safely?

Do you have a baby monitor so you could hear him if he woke (on your bed) and go in straight away?

Could you try a mattress on the floor and see if he sleeps longer?

Thanks for the reply guys, I am sorry to have taken so long to get back!

Heaven - I dont think he is ready for two naps, as he is quite tired before each of them & I when I have to keep him up longer (when out etc), he is sooooo unbelievably grumpy lol.

HotI - I wouldnt have a clue on how to teach an almost 8 month old to get off the bed safely haha. And we dont have a spare mattress, or the room beside our bed to do that. But I did do the monitor yesterday, I cant believe I never thought of that earlier :/ And the bed rails extend out longer, which I had no idea they done.
He had his last arvo nap in our bed, and slept over an hour!

So I think I'll be moving him back into our bed for his day sleeps. And set the porta cot up for nights so DP & I can get some alone time in bed, and then move him back into our bed at one of his early morning wake ups.

Thanks for your help guys :)

To teach him to get off safely, you want him to turn around on his tummy and go feet first. You can try it on the couch as well. If he isn't doing it regularly from the bed, maybe don't encourage him just now to get off- when my DD started moving around more often was we started to teach her how to get off more safely.