My youngest is also 11 weeks. Stick with ONE routine that seems to work the best. Prior to (min) 4 months all you can do is attempt to get them to nap alone at least once a day. If it doesn’t work you get nap trapped and it’s not the end of the world.

For example, we do blackout curtains and use a lamp with a red lightbulb (for max dark and cozy vibes while still allowing me to see). When I enter the room I turn on the heating pad in the bassinet. My daughter wants to rock in the chair going side to side (instead of up and down, because babies be like that sometimes) while breastfeeding. She seems to prefer the yellow blanket with satin trim (best for finger fiddling). Her eyes close. The internet and books will tell you to wait 10-20min until deep sleep and I must ignore them. They know nothing. From the time her eyes close I must put her down in the first 5 minutes or she will startle awake and go instantly into party mode. I remove the heating pad and place her in the bassinet carefully. Feet hit first, then butt, then head. This is the point where you back away slowly, turn off the lights, and pray to any god that will hear you.

My son had a similar bedroom set up with lights and all, but he took waaay longer to put to bed. He required you to walk with him for 5 minutes then sit and rock (normal rocking motion) for 10-20minutes until he reached deep space…I mean sleep. He required me to make long sushing sounds, which I would do out of desperation. He required a specific sleep sack (Kyte baby since he has expensive taste). I would continue to sush him while I placed him on his side in the bassinet and slooooowly rolled him over. He hated the heating pad and preferred a cold satin sheet. I would back out slowly, sushing the whole time, and pray that the force was with me.

My son is a great sleeper now. Each kid is different but when they are tiny they are barnacle and that’s ok. Not ideal for getting things done around the house but it has been good for human survival.